In my experience so far (about 60 games), this meta has been very offense favoured. Salamence, Cincinno, Ursaring, Conkeldurr, Hawlucha, etc. all running around makes it hard to find any viable checks. Despite them being pretty hard to prepare for, I don't think banning them is the solution (so far). I believe that if these offensive threats were to be taken away, the meta would devolve into some sort of effect spore/cute charm chance game. Instead of taking the offensive tools away from players, why not give them some defensive tools to counteract it? I think unbanning would do the trick; namely Deoxys-D and Aegislash.
Looking at the 5 specific mons listed up there, Aegislash hard walls Hawlucha/Cincinno, can wall Conk if played correctly/if it doesn't have knock off, forces Ursaring to run crunch if it wants to be able to hit it at all, and eats at least 1 hit from a +1 Salamence. This meta changes absolutely nothing about Aegislash, but it opens up the opportunity for others to deal with it far more appropriately than the standard OU metagame. It's still beaten by common threats like Greninja, M-Swampert, Porygon-Z, and Magnezone.
Deoxys-D is much of the same, though to a lesser degree. It doesn't really wall anything I listed, but it does get some utility moves that I think are pretty great. Trick room is very nice, and Deoxys-D would make a fine addition to any team based on it. It's a very reliable TR setter, also has rocks, taunt, recover, and t-wave. Honestly, I believe it to be just a worse Reuniclus, but it introduces some nice flexibility and some much needed bulk.
Some other ubers that could be alright in this meta, but I'm very unsure about (in order from most to least likely to not be super OP): Giratina, Genesect, Landorus, Deoxys-S, and Blaziken (mega???)
Keep in mind though, I'm perfectly okay with just banning the OP shit, especially if Aegislash/Deoxys-D/everything else turns out to be bad for the metagame, and I'm just missing it. I'd just like to give a fair crack at balancing the meta without banning all of the stuff that's making it unique.