Well, I'm currently working on making trolls (not half-trolls or "trollkin", but actual trolls) a functioning playable PF race, but I'm starting to lean towards turning it into a 6-level "racial class" instead. Not sure if any of these will come in handy with that, though I really like the rock eater trait. Once I get any kinda playtesting under way I can report back. For now, though, my only hunch is, as I saw touched on earlier in the thread, that some of the 3-cost abilities might be a bit overcosted, but we'll see how that pans out once I actually start building a few races with these.