I believe I may have found a possible new team composition for Twisted Treeline
In the last few months me and my 2 friends have been trialing a certain 3v3 team comp and we believe the team comp we have found is extremely strong.
We like to run 2 AD bruiser champions and an AP with at least 2 stuns, a snare or a positioning spell within the team comp, stun is preferred. Renekton, Pantheon, Sion, Kennen, Lux, Singed, Irelia are some example champs.
The idea is too get items quickly, (boots and a dorans blade/ring is quite powerful) and quickly rush to the bush closest to the enemies altar (The bush I'm talking about is the one across from the heal/speed buff. Don't go any further then that).
You then wait for the enemy to poke their heads in and with your stun comp, focus the face-checker and grab first blood. Whoever got the kill should b immediately and buy an extra item, this will help them snowball and have a greater advantage in lane.
Ganking is also an important part of this strategy. If you can successfully gank the other lane you can increase your chances of snowballing. However, this is risky as a bad gank will just waste your time and allow the other team to do something more useful (grab your altar, farm etc)
Our trials using Kennen, Pantheon and Renekton have been very successful and we have gone on 4 or 5 game winning streaks (3v3 of course) and my friends claim to have gone 17 games in a row without loss (however, I am not sure if this is entirely true).
I hope some others can help trial this team comp and give some feedback on some personal experiences using the strategy.