Balance on every server: every single game is unbalanced, 0 fun.
Bug fixing: fix the game glitches, do good amount of testing, don’t release half baked games for people to test.
Optimization: make the game work with DX12. Fix the future frame rendering.
Servers: recover pbbans support, add tools to customize the servers like before, make servers available in every country again, at least in Spain.
Game modes: recover the closed quarters with excellent graphical destruction.
Anti-cheat: take it seriously, many people left the game because of this. Automate statistics checking from players to avoid cheating. Maps: they are beautiful, big, but boring inmho. I enjoy just a few maps. They also lack balance.
DLC BFV: Bring back with BFV the original experience of 1942, you are on time if you are not releasing a new Battlefield until 2021, and I am hoping it is not a pre-alpha but a finished polished AAA EA game, not a game that looks to be released hurried by indie developers to get some cash to continue the development.
Community: listen to the community, make polls, count on your clients.
Performance: i7 2600k/AMD 8350 + 970/290X should be the minimum requirements of a future release, you have an excellent Frostbite engine, don’t be afraid of increasing the minimum requirements and offering a more realistic game experience with a lot more destruction and details (use real textures).
DirectX 12: Fix.