I was wondering if alchemist would have to call mutagen enhancement bonus? if it were seperated from belt slot improvements it would make it more likely to be specialized in. as is right now, i think i'd rather just by the belts.
perhaps call it a transformation bonus. and have it relate flavor wise to a change in appearance.
See here: http://paizo.com/paizo/messageboards/paizoPublishing/pathfinder/pathfinderR PG/advancedPlayersGuidePlaytest/round3/mutagensATadWeakRightNow