As much as I would love for Physick to be based on INT for SMN, I also don't want SMN to step on RDM toes. It makes sense for SMN to have a Cure ability because many summoners in FF Lore have also used White Magic, but I feel like SMN and RDM need to have different utility and thus I feel like Physick should get a trait that turns it into sustain, or a mixed form of sustain that gives the Egi regen and if the Egi takes damage the Summoner gains health based on the damage it takes. It would need to have a longer cast time and would really only be used for "OH SHIT" moments or Soloing. I'd love for my Summoner to be able to heal himself in some way shape or form.