1- Agree, the upgrade costs really needs a fix!
2-This is the most important thing ive also noticed. Needs fixing!
3- I agree to 50%, only the units from the mustering tent and the commissar squad shouldnt be able to retreat. The rest should be able ro retreat
4-Disagree, though wat you say is correct. But you cant expect that everything will be historical correct. Its a really funny thing and should be kept that way. Btw eveything that you wrote isnt historically correct neither
5-Could possibly be an upgrade for the AT squad. Its kinda historically correct to. Usefull in the begining, unusefull in the end

6-Agree 100%!
7-Agree 50%, some produced times should be longer but the rest is just fine
8-Disagree, its a cool feature and should be kept.
9-DISAGREE, i think its really cool!
10-Dont know so much about this so no comment, but if its uncommon it should be switched i guess
11-Disagree, i think theres a good concept behind the whole faction, but thats just my opinion