It would make a lot of sense. The BB for FaceBook app is custom written, and will therefore only contain code/support for functions that the devs thought useful.

For example, FB games, certain group functions, certain "normal" functions (like the @ in text to tag people) don't work the same, or don't work at all.

An alternative might be to load FB via the browser. It will try and redirect you to the mobile facebook interface, but you can scroll to bottom and force it to load the "full" site.