If you really want to prove to Riot that TT Draft would be viable, you have to come up with some numbers. A successful thread in General Discussion would be the place to start, if you were even going to try, I guess.

For example, here's a couple that have been, as a baseline.

Lux name change petition: 30,615 views, 3,357 votes, +629 upvotes.
http://na.leagueoflegends.com/board/....php?t=2408149
(this and like a billion other threads made them go back on their name decision)

Astronautilus skin idea thread: 54,555 views, +564 upvotes
http://na.leagueoflegends.com/board/....php?t=1853518
(it got made into a sweet skin!)

But...
Princess Karthus skin idea thread: 98,000 views, +1458 upvotes
http://na.leagueoflegends.com/board/....php?t=1456403
(but... still hasn't happened. Will it? Maybe!)