3ATB doesn't solve inherent defensive issues. It always sounds nice having a CB more in defense, but the way you defend wide spaces in that setup sucks or makes one of the CB's useless. It's not a solution for me, especially when you fantasize about 3ATB with Fati and Dembele back, who would solve part of our issues in a 433 as well.
Alba-Pique-Araujo-Dest/Mingueza is fine. Biggest problem remains Busquets and a coach, who doesn't know how to set up a midfield.