I like the Shardmind, though it's very situational. I like the mechanics of the race, but I could only see them in my campaign on a case by case basis, not as one of the common races. You would need an interesting justification to play one, but i certainly wouldn't rule them out. The Wilden were very meh for me, but that's just personal preference I think. If someone wanted to play one and could justify it I think I would allow it.