I couldn't roll need on leather
I was running RFC with my level 15 shaman who is also a leatherworker, and a leatherworking recipe for crafting a leather foot item dropped. It wouldn't let me roll need because "your class may not roll need on this item". It didn't make much sense, as my class uses leather, and besides isn't it more of a profession-based thing to roll need on it? What if I'm making the armor for other characters?
Suggestion: allow sub-40 shamans and hunters to roll need on leather, and also lock need rolls for recipes based on whether you have the profession or not, and not based on whether or not you can use the produced item. If necessary, require players have the same profession level or one lower (for instance you must be at least artisan to roll on a master item) to prevent people cheesing on need rolls by swapping professions.