I think the ego/confidence point is a big one. One thing I don't think people generally realize is as big a part of all sports, but college hoops in particular in this case, is that kids need to have confidence. If you're unsure of yourself, you're constantly caught in the middle. Like a baseball player who struggles to catch up to the fastball, then cheats and gets out in front of a curve.
What can FH be? I don't know. Starter seems like a bit of a longshot, but if he gets over the ego component and works hard to become a better defensive player and ball-handler, then I don't see any reason he can't be a solid compliment at the point.
The other thing to remember is players who haven't shown much can improve. Not comparing frank to Lazarus Sims, but it's worth pointing out that Sims did nothing for three years and everyone hated the way he dribbled. He wound up being a solid PG for most of the 95-96 season and actually developed a funky but effective offensive game as the year went on. Reached double figures in three of our six tourney games that year.
Point is, if the kid works and feels better about things next year, it seems reasonable to think he could contribute.