I didn't mention doubles because at least the Gamecube games exclusively use them. And I like Mystery Dungeon too, I wasn't trying to bash it.
Regarding the shitty spin offs, I'm also annoyed that the manpower going into them isn't going towards more important projects. But as you said, that's not really Gamefreak's fault. I kind of forgot to what extent Gamefreak was involved with those, my bad.