Go check out my Banjo-Tooie N64 review to get my full thoughts on the game. I will share the part of my review that specifically talks about the 360 version here though.

How does the Xbox 360 version improve on Tooie? Not much to be honest. It improves some controls. Stop n Swap lives on in this version. You get some player icons/profile pictures and a wallpaper for your 360. It looks better. I believe you could select a boss rush mode and play all the mini games from the menu. It also improves the controls the the first person mode.

I do love this game. It is not better than the first game, but not a bad sequel.