Miracle and salembay and sands of albicka are definitely not good 3v3 maps, these are all make gun and walk into enemy base maps while one player goes t2 air.
If anything alicka is better as a 3v3 map with the 1-6 slot distribution now (I think top right vs bottom left?) than that distribution. The setup you posted could be fine for lower rated players, but that’s just horrible for high rated gameplay because the gameplay is insanely reductive.