Game Freak's weird. Basically, while other studios went through their 'oh shit it's the big time' moments in the early to mid 2000s due to the rapid increase in graphics quality on home consoles, Game Freak sequestered themselves mostly on portable consoles. So while there's some really good ideas you hear slipping out of the company (they basically have an internal Game Jam-y thing, iirc), it's sorta been on cruise control.
Nearly every spinoff game is made by a different company. Spike Chunsoft made Mystery Dungeon, Namco Bandai made Pokken, Hal Laboratory and Creatures Inc. made Rangers, Genius Sonority made the Gamecube games, etc.
Game Freak is basically having it's 'oh shit HD is a big deal now' moment about 15 years late.