Huge problem.
Twisted treeline is lasting as long as a normal game would in Summoner's Rift.
That means, 30~40 minutes of game time for LESS IP rewards.
I was pretty sure twisted treeline was meant for a shorter, quicker and similar fun game. ( 15~25 minutes of game time.

You basically took out the "turtling" and forced the game to last that long.

Granted, that I haven't play that many game, but I really don't want to play more to find out if it's going to take up 30~40 minutes anyway. :/