Some great ideas there Stra2GG, I have the same frustration about the 'no info' when spectating and being able to create customs games would be a lot of fun (count me in for some tournaments then ).
Other than that, some more game modes would be a great addition and probably fixing some smaller bugs as well (I'm still unable to equip any titles/emblems and can't purchase some paint for my guns even though I have the right amount of money for it).
Another change that might just be me but personally I would prefer the highlight at the end of the game to be the final kill of that game. Now it's just the guy who got the most multi kills so a lot of times the highlight is something that happened like 20sec after the game started. I think it will be much more fun to have the last kill be the highlight, seeing there is only 1 more kill left pushes players to really go for that final one, maybe even try tricks to get a funny/awesome highlight.
And finally it would be great if I could buy just chips with my AP points whilst now if you want to have chips (to unlock special characters, clothes or dances) you need to buy the full package deals with the guns and stuff even though they might contain guns that you don't even use (like if you aren't a sniper yet you need to buy the pack with the sniper rifle just to get the chips). I'm more than happy to support this game money wise and buy some stuff now and then but I don't want to keep buying the same packs and guns just to get to the chips