Wow, that's quite a list (and I'd like to see many of those things, too)!

One of the things on your list (Number 16) is already in the game. Game speed is set independently for each player's game. The problem that people sometimes see with game speed is caused by the way changing players works. If you go to the menu and change players, then change the game speed before you click Play, the game will update all of your tanks at the new speed setting when you click Play. You must click Play immediately after switching players if you want to preserve the game speed setting that you had previously set for that player. Once you've clicked Play and allowed the game to update your tanks, you can go back to the menu and safely change the game speed for that player.