I have a couple good friends that I frequently join up with to play Twisted Treeline. It’s not a perfect experience by any means, but it allows us to play a draft mode together and the games are relatively short. The best part about TT is definitely game length, but the map leaves an awful lot to be desired in terms of balance.
The time issue actually carries over to Summoner’s Rift for me. I rarely queue for 5v5 unless I know I have an hour to spend and even 3s can take 40 minutes if the game goes long. That’s a pretty long chunk of time to commit to a game, especially if it ends up being a loss. I’m sure we’ve all had games that are going so poorly that there’s no hope of victory but teammates hang on and refuse to surrender. Those types of games make me long for a quicker experience.
DotA had an “easy mode” toggle that could be used with each gametype, granting bonus gold per second and I believe extra gold for towers. It increased the pace of the game by allowing players to passively reach a level of farm more quickly, similar to the way Twisted Treeline generates per-second gold faster than Summoner’s Rift. I actually think it would be cool to have an “easy mode” playlist in League of Legends, a mode in which the XP and gold rewards were tuned so that 30 minutes looked like 70 minutes does now.
That mode wouldn’t work very well on Twisted Treeline. The 3v3 map just snowballs out of hand far too quickly. Games would likely be decided by the first fight (and in some cases, they still are). For Summoner’s Rift, though, I think it would give casual players more opportunity to fire up a game while the baby’s napping, in between classes, or just before heading to bed. Speaking of which…