Less of a steep increase on the rare changes sounds like a good idea. My other suggestion was going to be like, increase the cost of rare changes based on how many changes that character has already taken via rewards (mostly to keep people from stacking up on them, if that was the major concern), but now that I have a better grip on the motivation behind the changes that's probably a less practical solution.
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Less of a steep increase on the rare changes sounds like a good idea. My other suggestion was going to be like, increase the cost of rare changes based on how many changes that character has already taken via rewards (mostly to keep people from stacking up on them, if that was the major concern), but now that I have a better grip on the motivation behind the changes that's probably a less practical solution.