op. I agree with alot of your list. I partially disagree with voice chat. I think the REAL problem is lack of party chat. In 2016 this is an industry standard. I don't care about talking to strangers, but i should be able to talk to my friends.
I disagree with level design as well. I think all the levels were expertly made. The only reason to change them is if they add different modes. In particular, if you made the stages bigger, they would require a longer time limit than the standard 5 minutes.
Your accuracy thing is lag. I only get it if im running other things on my bandwidth.
But yeah, alot of things you mentioned would be cool though.







