System -- check

Nationalism -- check

"United" humanity -- check

Questionable social strata -- check

School -- check

Fat childhood buddy -- check

Bratty, non-biologically related sister -- check, except that she's not a damsel in distress

Hints of harem or semi-polygamous society -- check, due to survivalist nature of transmigrated society and low male-female ratios (plausible if you followed Earth's history of Mormons)

Fake master persona -- check, similar to "Library of Heaven's Path" so MC can continue spreading knowledge without suspicion

-- A meridian circulatory system, alongside other normal human biological systems

-- Presence of spiritual energy that affects/mutates normal physics down to the subatomic level, which messes up with humanity's original precision engineering, which imposes technological inconveniences, which leads to development of clunkier high tolerance machinery (almost steampunk-like), and finally a hodgepodge society that blends energy crystals with only some modern day conveniences (lack of elevators, etc)

-- A modern, practical discussion of evolution in terms of resources... human brains are capped at its current size due to caloric requirements and what our environment offers us (this is real science).

Since the new world has additional spiritual energy, it allows for further evolutionary development.

-- Unstable spatial wormholes that makes human/alien geographic boundaries unpredictable/untenable. i.e. you can't just build a BIG BEAUTIFUL WALL *cough cough*

-- A separate currency and governmental system for superhumans created to allow them to peacefully co-exist with the rest of "normal" humanity

-- Descent of humanity into greed/corruption during lulls periods of war

-- Questioning what is means to be "human" and whether there is truly any shared sense of solidarity, especially given the various genetic changes among humans due to spiritual energy and ensuing extreme social strata

-- Believable 50 yr period of adjustment for humanity post-transmigration, with education focused on war-like capabilities for survival

-- Nationalistic pride based on survivalism... very similar to Forty Millenniums

- Future techniques require concurrent development of resources. They also aren't easily/immediately accepted by society even if they are an improvement over older versions.

- Major developmental decisions made by a civilization are non-binary. The consequences come at you like a slow-moving truck. So a time-traveling MC can't just throw out a last minute cultivation technique, become OP for a single big battle, etc and expect to affect the outcome of an entire war (unlike how "Tales of Demons and Gods" likes to portray it).

The plot armor of being able to know future events and his experience of being a seasoned veteran, albeit a low-ranked one in the future is scrapped by the author himself. The author made it that the MC is unable to withstand the full amount of his future memory. Thus, he was left with scraps of his memory. Thus, the author would use this as an excuse again and again to justify the MC's inconsistent personality and a sudden event that he wants to slot in all of a sudden.

First, the personality of the MC. Sometimes, he acts like a spoilt brat. Sometimes, he acts like a seasoned veteran. You don't need to be a genius to see that the inconsistency is simply because the author wants that specific personality for that specific mood. The result? A MC that is cranky and unlike a human. Next, the author would use his incomplete memory to slot in 'sudden' events. Those are events that was never shown or totally unplanned. The MC would suddenly 'remember' that 'something' would happen at the 'right' timing. For me, that's an obvious case of lazy writing. The inability or the refusal to put in effort to foreshadow an upcoming event but to use a shitty loophole to manifest it is just lazy to me.

Alright, that's my problem with the reborn part. Now, the system. It's a system that is intended to make him into a savior of his civilization which was destroyed in his first timeline. Earn points by performing actions of a savior and use those points to strengthen himself. From training citizens and prepare them physically and mentally to picking up rubbish will net you appropriate amount of points. What I hate the most with this system is that the MC can just use points to add level to his skills. Add the level and he'll gain those skills right away. No need for any training, add it and he'll be able to use them. He'll get discount if it's something he already know but if it's something he already knew, why bother spending points unlocking it? Still, getting skills just by touching the upgrade button is just shitty for me. I believe that to get something, you need to pay something and those points just aren't cut out for any semblance of an equivalent exchange. There's a reason why most novels with system are shitty.

For example, Lin Chuan and Gao Ye. Their way of doing things are not the correct ones but they are just humans.

They lived out their life and failed at trying to change the twisted society before resorting to being a 'villain'. They are not the MC. They do not have the ability to relive their lives nor the system to give them shortcut to strength. The MC is able to use those plot armors to change his life and seek benefits at 'key points'.

But those 'villains' that he mocks are not able to do so. They were hurt by the society. Their families were hurt by the society. They could not see the world as some MC with a thick plot armor would. And yet, the only thing the MC would give them is a label.

When you label someone as 'something', you repel the possibility of it being anything else than that 'something'. They aren't even humans anymore. Their past, their sufferings and experience is null except for being a villain. The way the author wrote the MC condemning them as just villains made it as if they're villains from birth. Nothing more than just a villain. It disgusts me deeply.

OMGEI suffers from a similar issue as compared to FMC; the mediocre beginning. If you're already a veteran in the field of Chinese novels, OMGEI comes off as mediocre and the first side characters are uninteresting. They represent the start of the journey and the peace and tranquility of the earlier days without much development. They feel almost more like a plot device rather than any kind of well developed side character. I am personally fine with this, but complaints about it have their own logic. However, side characters become much more dynamic after the Lin Chuan and White Spirit arc, with us learning more about Lu Siya, Qin Hu and others. In OMGEI, I found it to be more palatable if you look at them as a part of a world rather than a story.

My personal feel is that the author is trying to build the world by injecting life into it through a wide cast whose motivations we can only begin to fathom. I feel that OMGEI isn't about the side characters, or even Meng Chao, but rather a well fleshed-out world in and of itself with it's own laws and rules with many parallels to our world. Meng Chao and the other characters are paintings which are stained by each other and the world's colors, making a beautiful interconnected web of morals, issues, monsters, humans and history.

I ain't gonna lie, I cried like a bit*h when I read Lin Chuan's arc. In addition, I had always liked the antagonists who held the same morals as the MC but had different methods of achieving them, which is why I found Gao Ye and Lin Chuan such amazing characters. In every single email sent by Gao Ye, you can feel his passion and devotion; in his final message, his regret is palpable. Lin Chuan's reactions feel like a human's; a broken and sad human, but a human all the same, which makes him all the more terrifying whenever he pulls some crazy stuff. In addition, if you're looking for maniacal masterminds like those in FMC, you'll find them in the terrifying and brilliant abnormal beasts.