It doesn't matter. A Scholar is a healer, an Arcanist is a DPS. That alone is absurd combination and I don't know who even though it could work out when they made Arcanist progress into either a Summoner or a Scholar.

There is nothing stopping them from changing the DoT-based Arcanist into whatever sort of pet user, or force user, they want once they separate it from the Summoner. It's still going to be a lot less work than remaking Arcanist to become a healer class. And DPS class should not ever turn into a healer class...period. Not in a game where hybrids are not allowed due to fixed party setups in standard content.