its been how long and you're ready to declare that all the broken stuff has been discovered. i think you're underestimating what this community is capable of.What do you mean by another Dynamax abuser come along? At this moment I say people have probably discovered all the broken stuff. The other are mostly just gimmicks - there are always many checks to them. Dynamax Poltergeist is good but it is walled by literally every Dark type. A lot of things check Hawlucha at +2 - G Weezing, Aegislash, Def Gastro, Def Clef (though not as common). Barrasweda cannot muscle through a lot of things without Max Knuckle, and it often get revenged by priority SP if running LO. It's just Gyarados and Togekiss are over-centralizing (T tar is like ORAS MMetagross - it can beat anything but requires the right coverage so that's questionable)
neutral +2 hawlucha has over 50% chance of ohkoing 252/0 aegi with max lightning after rocks, easily 2hkos 252/252+ gweezing with acrobatics, def gastro gets clapped as well?
edit: had bp of max lightning lower in original calcs. better chance of ohkoing aegi etc.