Again. If you disable effects on gear the priorities change. You might focus on different stats because you no longer have X tied to that gear. Or X ability no longer boosts Y spell causing Z stat to be less important. Having to change balance between the two means you will have different gear, rotation, and ability priorities between the two. It isn't a win-win to cause every one to learn double the stuff just because you can't be bothered to do a little bit of open world PvE.