We've made it to 30 pages. Congrats to everyone who contributed, and let's keep the support for the Legendaries going.
That could be part of the problem, but that doesn't explain why Mimikyu became so popular when it has neither legs nor arms.
The Smash fanbase sort of picks and chooses which rules they want to follow when predicting which Pokemon have the best chance. Some say popularity is most important, but why does the support between Dragapult and Toxtricity differ so much? Some say the Pokemon needs to be humanoid, but why did Eevee get so much support for Ultimate's base roster? Some say Game Freak needs to promote the Pokemon, but hasn't the Grookey line gotten significantly less promotion compared to the Scorbunny line? Hasn't Toxtricity's promotion been fairly bare bones so far?
Personally, I think the biggest influence is the Pokemon's design. If the design clicks, you get support. If it doesn't, you don't get support regardless of how obvious and fitting you might seem for Smash (Incineroar). The next biggest influence is probably the Pokemon's type, and I don't think I need to go in-depth with my reasoning when grass types have been requested since ORAS.