Some of these most likely have been mentioned but I feel like saying them anyway!
1:The biggest issue besides the obvious server issues is when you do get to play the games just take to long like I get it it's supposed to feel like a battle but the points needed to win needs to be less or points earned needs to be more cause playing 25-40 min games when your getting stomped isn't fun!
2: Theis is a more obvious ones like the game needs some serious optimization cause the fps is a little to random as it stands!
3:The sound design just needs some more work as in how far away certain enemies or vehicles are just sounds really off and kinda muffled.
4:more personal then anything but I feel snipers just get way to many hit markers and should be buffed slightly!
5:if there is even bigger maps in the future I would love to see air vehicles but that's obviously way down the line!
6: Animations like crouching, running, jumping over objects, and jumping off stuff need a serious overhaul like for running I would love to see almost like a bf3 or bf4 style to run animation it would look so much better.
That's really all I could think of so if you agree or disagree with anything please comment guys I would love to hear your opinion!