Things that need to Change in Pokemon Games 2

I think the idea here is good, but I'm not so sure it's that simple. Not everyone who plays Pokemon, even the meta, uses Smogon rules (not to mention they're constantly changing), so people are going to have a lot of conflicting ideas in what Pokemon belong on which level. It's kind of like when Wonder Trade was first introduced and people wanted them to implement a multi-level system that segregated the Pokemon by how coveted they were--yes, I would prefer not to trade away my 4IV Eevee and get some Caterpie caught on Route 2, but the quality of individual Pokemon (and the existence of perfect IVs) is completely subjective.

Maybe if there were a tier-based battle system based on something more concrete? Like, perhaps a free-for-all, then a lower one where legendaries are banned, then another where legends and megas are banned?