As everyone knows, this beginning of the year for the PU was marked by a series of suspects to try to make this meta more attractive (
Passimian,
Magmortar and
Archeops). In the meantime perhaps that of Aurorus or Kingler (who I think are the most plausible candidates), can we reasonably imagine that he will have discussions for the possible unban of some olds BL4 (in the manner of
Hariyama in October)? I think especially Samurott, Tauros and Charizard (for Gallade and Sawk on the other hand it seems to me compromised)
I honestly doubt we will retest anything soon, or perhaps ever. I think anyone who was around during Charizard meta can confirm that it was 100% a pain to deal with; its set unpredictability is unparalleled. Z-Celebrate, Dragon Dance, Choice Specs, Z-Sunny Day, Bulky Swords Dance... It was just way too versatile with few sets sharing answers, if any at all, not to mention most sets being difficult to respond to on their own. Revenge killing wasn't easy, either, with Z-Hold Hands and Z-Celebrate avoiding most Choice Scarfers thanks to the Speed boost, as well as surviving those that outsped it thanks to the increased bulk.
Tauros is just way too strong with way too little reliable answers, with little to nothing walling Sheer Force Body Slam, Earthquake, Iron Tail, Fire Blast, Zen Headbutt, etc. It can't even be revenge killed reliably because it can also run a viable Choice Scarf set of its own, invalidating Pokemon such as Primeape and Pyroar.
Samurott seems to be widely considered the least broken of those in PUBL, but it's still quite a pain to deal with. Set unpredictability between special and Swords Dance sets were really big, not to mention the difficulty in beating each; special sets could lure checks with stuff like Knock Off, Taunt, and even mixed options such as Superpower; Swords Dance variants could blast through "answers" such as Gastrodon and Ferroseed with nukes such as Z-Superpower and Z-Megahorn, and stop revenge killing with a powerful Aqua Jet.
Overall, I think that all the bans we've done so far are still pretty justified, even in today's meta. Although suspecting something to come back down isn't impossible, in my opinion it's very, very unlikely.