So I was just watching GameXplain's video about the initial reveal that Playtonic was making a spiritual successor to Banjo-Kazooie:https://www.youtube.com/watch?v=82IZQyXU_OM
And the subject was brought up about why the "collect-a-thon" 3D platformer died out... They mentioned that Banjo-Tooie and ESPECIALLY Donkey Kong 64 went overboard with the collectibles, and that might have soured people's tastes toward the genre.
Speaking for myself, I do find the original Banjo-Kazooie more appealing then Banjo-Tooie, though it's hard to explain why... I think it might have something to do with how simple, condensed, and relatively straight-forward the first game was, while the second game felt a BIT too big for its britches, if you know what I mean... The worlds were massive, and there was so much to do, and a LOT of new moves to learn, so there was a LOT of backtracking involved. Shortcuts made things easier, but I can't help but feel a strong appreciate for the first Banjo-Kazooie for keeping things simple, among other things, then the second game that tried to "go big or go home"... Granted, it's still an awesome game and I love it, though not as much as the first game.
Given that Playtonic has said that the worlds are apparently going to get bigger overtime, I have to wonder if they're going to blow their load again... Only time will tell, I guess.