Bottom bracket height is always a bit of a compromise. A high BB reduces the likelihood of striking your pedals on rocks, but it also means a higher center of gravity which can have a negative effect on handling.
Lately I have made quite a few modifications to my YiPsan mountain bike. On the list was an XTR crank, a new bash guard, Effetto Mariposa Caffelatex tubless gunk, and a Shimano SLX double specific front dérailleur. This post is regarding the latter.