If you are planning on removing Twisted Treeline, i'm done, Riot
http://eune.leagueoflegends.com/en/news/community/q/ask-riot-how-weve-made-events-out-ranked-3s
"If we made Twisted Treeline today, it would be for our Rotating Game Mode Queue (RGMQ) – that's where we mix things up and give you fresh modes for a shorter amount of time. If the population for Ranked 3's stays healthy, we’ll maintain the same windows as Ranked 5s. If the queue times become too long and the matchups are difficult to balance for the number of players in the queue, we’ll have to make a decision on whether it’s best if we move into in the the RGMQ where it will get shorter, healthier periods of play."
I'm an avid 3v3 player. Twisted Treeline is my favourite map, and I feel deeply offended by your statements. If Twisted Treeline population is pretty low, support it. Give it more attention, instead of throwing it into Rotating Game Mode Queue. Create 3v3 events on Twitch, stream some Challenger games. DO SOMETHING, instead of going the easy (and asshole) way.
Seriously, Riot, if you remove TT from the regular queues, i'm done with this game. And I hope a lot of people will do the same.