I am starting a 3s "team" with a 2 of my good friends and we've only been at summoner level 12 playing level. Since there's 3 of us and we can Skype easily, the 3 of us decided to play 3s regularly.
I've been playing as Fizz or Nidalee, one has been playing as Master Yi, and the third has been generally playing as Ashe, Miss Fortune, or Graves. I am afraid that my team roles won't work in later levels, since we have 3 carries we get lots of kills and win 80% of our games, but as soon as we play a ranked match for example or a higher level team, we're screwed.
Onto the main point: is a 3 carry team good for 3v3 ranked matches, or should we figure out a new team organization, such as a tank, a DPS carry and a support, or maybe 1 tank and 2 carries?
I appreciate all honest input, and hope sometime play you in-game!