Field Specific Error Messages

You have error messages being on a per validator level. It would be nice if you could keep that, but then also allow the error message to be overridden each time a validator is applied to a field. That way if you are applying a phone number validator to several different fields on a form, instead of seeing the same error message twice, you could get error messages like:
Cell Phone is not a valid phone number
Home Phone is not a valid phone number