>>57077709I think it's got too much anti-fun shit. Like you said, Serperior is anti-fun in Gen 6 especially. Clefable is also a huge pain in the ass. Not to mention Amoonguss and the other Regenerators. The longest Showdown game in history was in Gen 6 for a reason.
I think it's much better than 7 or 8, though, particularly because it lacks Toxapex, Heavy Duty Boots, WishPort, FuturePort, Kartana, and Z-moves.