Yea this is my main problem with the 3v3 tmm. Most of the maps suck, and they're just not actual 3v3 maps such as this one. It's clearly generated as a 4v4 or 2v2v2v2.
While I agree being that one spot person can be fun, what's not fun is when the person in that spot on your team isn't nearly as good as the other team's single position and the game is over before it starts.