bamboo could work. The problem is it's too flexible. It would save a lot of broken boards due to it's ability to bend back. If you were to use bamboo you'd probably have to use a flexible glue. Not sure of it's wear characteristics but imagine that if you had bamboo on the bottom it'd wear fast. You'd have to have like
a thick maple layer in the middle and 2-3 maple layers on the bottom for wear. not sure though.
On another note, I used a bamboo bat over maple and it had excellent recoil and felt really solid, hard, yet flexible to give you that aluminum bat trampoline effect. You'd get a lot of feedback vibrations on your hands so I know it's tough on the glue.