>>38981843as an example digimon gives absolutely no two shits about consistency between games
evo lines shuffle around, entire swathes of digimon vanish or re-appear installment to installment, and I don't think there's been one case of consistent stats between games, or even using the same set of stats. But by the virtue of throwing everything out the window every time they're never really stuck in a corner.
Oh, this digimon is utterly useless in cybersleuth? Cut to digimon world where a fucking child level can manfight god with the right kind of training. Have a stupid gimmick like fusion or armor? Whatever, just toss that asshole into a normal evo line who cares. Is this guy a Virus, Vaccine, Data, or Free? Whatever we want it to be. What's its moveset? Everyone does have signature moves, but as for how it functions it's uncharted territory each time. Etc.
Pokemon forgoes this freedom in a tradeoff that allows you to have favorite mons, builds, and moves that you can keep on transferring/replicating between games. Now if they actually did that and just threw out all the shit they've built up so that we'd see entirely remade stats, shitmon rising up from the depths of PU to skullfuck lando-t to death, or battles just outright working completely differently then maybe it could work.
But they won't, they'll share a big downside with digimon's recent games in that your bromon could very well just be forgotten while ditching all the strengths because GF laziness so we still have hundreds upon hundreds of pokemon with BST that were shit in their gen let alone with powercreep, the same must have items like choice whatever leftovers life orb etc., even if they're gone for a gen or two pokemon will mostly be as strong as they've been or as weak as they've been when they come back (barring miracles like pelipper getting drizzle or nerfs like brave birb, which will literally be 1 in a thousand by gen 9)