Game Mode Idea
Although I understand that this could be annoying to create it would be fun to see.
A game mode in which one person has to command two champions (maybe switch with a double left click?). Yep; and to make it more interesting the game has to have restrictions via buffs/debuffs. For example (1) Towers will have buffs that state it cannot be given damage to unless 4 champions are within X units (a.k.a Teemos). And also something like (2) You have to use a champion for at least 15 seconds of the minute can be modified time to make game feel smoother which would need testing. So if your using one champion for too long the game will forcefully switch you to the other champion (and so good players that already switch often will not care about this restrictions). This is just a rough idea as of now, but just wanted to put it out there.
I think this kind of spice is something veteran players especially those from season 1 and 2 would appreciate.