suggestion: new auction filter by character class

I think it would be nice if you could filter auction items by character class. Now we search on items name, lvl or filter what my toon can use already.
But when i disable the "usable items only" option, i see every item in auction (which is nice), but it also lists from items from other classes which i never can use.

A new option which filters by class (com,opp,eng) would be nice, so i can see all generic items and all class specific items.
pls don't make it just the current class, so i can check for my alts n friends without having to switch back n forth.

just a thought to make it more convenient.