Since there's memberships, it'd be nice to add a private vault for players with a membership (maybe make it with tiers?) Tier 1: unlocks VIP area, tier 2: private vault (3 vaults) , tier 3 unlocks: private vault on PC - Pokémon Storage (more vaults? idk +extra stuff)
Reason of suggestion: if I have lets say 60 vulpix that are level 50, if they don't hold an item its almost impossible to figure out the vulpix I wanted to keep (unless I note down stats etc.).
It would be nice to be able to store your "favorites" on vaults, or pvp teams/pve teams or even vaults just for selling (people can choose what they do with their Pokémon Storage.).