At some point, whether it be Humania's release or another campaign release, skills will have to be completely revamped, especially for PvP since a linear increase in skills would really make PvP unfair(er). It would not make sense in PvP to have some classes be able to completely dodge attacks. I'd imagine they would do some inverse exponential increase to skills instead, having higher level skills to have less of an impact than lower level skills.

Or, have an automatic % debuff to attributes in PvP, i.e. dodge stat in PvP is decreased for all classes by 15-20%.