[Mr.SmileGod]

Charm already doesn't seem mandatory, really. People use it, but I don't see it used in every fight. If it were really a problem, again, scaling changes would do the trick? But as it is, given that the sources are limited, it is removed via damage, etc? I really don't feel like any of what you're suggesting is strictly necessary. Not only that, but in an attempt to strike at high charm values, you'd be damaging already low ones. Ones like the enchant that nobody uses as-is, with what... 15% charm? Or the charm-on-crit tome?

I just don't think it's necessary, honestly.