Okay, I checked out your bonuses list and I think that with them, at least for the Wei, they would be OP.
- Eco techs -50%: Seems kind of generic and Vietnamese kind of have a better version in all honesty.
- Discounting certain military buildings: Seems like a better version of what the cumans have for a civ and synchronizes a bit too well with the next bonus.
- So this bonus is very quircky and overly complicated. Furthermore, since your stables are so cheap, it will be so easy to accomplish pre requisite that the stats will always be maxed out. Thus what they have now( a flat +15% CA, +30% Imp works the same in practice.
- This is a really weird bonus and seems like it would fit better as a unique tech(Most charge attack bonuses are from UT or UU). Sounds like a good replacement for food generating units UT.
- Team bonus: can’t argue with it.
- Overall, if the Wei received these bonuses, it would make them a worse civ. Respectively, what they have right now for eco, is at least unique while these suggested eco bonuses are already existing(though I do like the idea of a discounted barracks for some infantry civ.)
- As for military bonuses, it would essentially over complicate what they already have. Though I would like the Xiabei raider removed as you mentioned.