Man in the Funny Hat
Hero
Well, when it first came out we were using everything in it. Over time we dropped most of it other than the barbarian class (which was nonetheless only played a couple times), the new spells, and weapon specialization but for bows that was dialed back. Fastest to drop was the cavalier class. Next was dialing back bow specialization (we referred to it as having Rambo-ish nuclear-tipped arrows). Next to fall was comeliness as a separate stat and no longer using ANY of the ability score generation options. At some point our own playtesting just came down to the only really worthwhile thing in it was weapon specialization.