So I've think of some other suggestion that I'd like to share with you.
1 - After building last tier of Hospital and Imperial College, characters that stay for some time in those settlement should have a chance to gain a surgeon as a trait/FEAT, it would be cool.
2 - Not sure if it is already possible, but it would be nice to have some black bandits available as mercenary recruitment in the Heshan mountains.
3 - All pass take like 6 turn before they surrender, or something like that, but should they not take a lot more time? Player shouldn't be able to take advantage of this mechanic and just wait out the enemy while they should be able to resupply their base almost infinitely because they have no enemy in the back.
4 - This is probably known, but just in case. When you bribe a character that has infantry or bow buqu, they convert into cav everytime.
5 - Character that changes side (like Guan Yu joining Cao Cao or Lu Bu joining Liu Bei) lose their campaign model.
6 - Xu Huang portrait doesn't match his campaign/battle model, so it would be cool to bring back the portrait that portrays him accordingly.
7 - That is a question, not a suggestion : Where I'm at in Cao Wei campaign, building Merchant Guild or commerce or even road doesn't seem to impact my economy anymore. Is this just a bug (like we can see it impact our economy but it actually does) or is it intentional to just not have trade anymore even though I have trade agreement with huge faction like Ba Shu and Sun Clan? And is there a way to change that so that trade decrease over time instead of completely stopping?
8 - Did you guys did something to slow down the command to unit? By that I mean there's always a delay when you order a unit to attack or go somewhere, so if it is your doing, is there a way I can undo it please?
Thank you!