But it doesn't piss off 99% of them >_>
The audience is still the little kids.
Little kids who want to catch a Pikachu at some point in their game.
You might be able to get away with rebooting the series by removing all old Pokemon and then gradually reintroducing a handful of the most popular/interesting ones, but ehhh.
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"The courtroom is the garden of holy judgment. Those with lechery in their hearts should leave this sanctuary at once!" ~Franziska von Karma