Banjo-Kazooie composer Grant Kirkhope says he'd still love to work on the series, but pitches for its return have been turned down over the years.
Banjo-Kazooie is probably the game series with the biggest being dead to huge fanbase ratio (that or Mother). It's coming up on two decades since Banjo-Kazooie: Nuts and Bolts, which divided fans for not being a platformer despite being a great game in its own right. So, for most, it's been closer to 25 years since the last Banjo-Kazooie game, and despite appearances in Super Smash Bros. and re-releases of the original games, it doesn't look like there's much going on with the series.