Yaisgood possessed some personality traits that I found didn't represent a good group member. Before he joined I knew him as someone I wouldn't want in the group, and after he was guilded (While I didn't want to group with him) I got a few other officers to get a glimpse of him.

He can play a mage fine, but he just didn't pass the personality test.  It was a tougher call, but we're trying to get a little tougher on members who don't stand out as really valuable.