Two changes to the current game would make this more appealing.
1. outline of what classes get at each level. A lot of people want this anyway. But until we get that, there is no reason to make respecing so expensive
2. Allow spell changes without respeccing. Yeah, I get that's not how it works in D&D, but it's painfully stupid to have to do a full respec to change a single spell. Many don't even want a full respec because you have to remember every other spell/ability/feat you picked to change one skill.
