>>40697705>>40698513That only really applies to the legendaries though, who don't really get much love when it comes to stuff like megas or signature Z moves if they're not currently being shilled or their name doesn't include Mew.
Back when the gen started, Hydreigon was notable for being one of the few fully non-legendary Pokemon with decent stats who could fill a moveset with different typed attacks over 80 base power. And he's not even hot shit today since he has that meme-ass 98 base speed. There were a bunch of fan favorites like Lilligant, Haxorus, Eelektross, Volcarona, Meinshao, Escavalier, etc. who struggled back then and could still definitely use the buff today.