I find the current 3v3 map pool to be so terrible, that Snowbound Colony is literally the only map I would not ban.
Game is playable, but almost every game I get a map and want to leave immediately.
I almost never do, but it is so tempting.
I can not stand the way bases are set up, if you take more than natural expand, you are completely exposed.
I like having the option of a third base, which very few of the current 3v3 maps even allow, unless one of your allies stays on one base.
Keep 1v1 maps with the meta, but do not ruin 3v3 by making it into 1v1, it is not the same meta at all. And the map controls the meta. Stop making terrible maps for ladder.