Originally Posted by
Ekimmak
Funnily enough, both WERE available for cross-class before the revamp. Cure has a higher potency than Physick to make up for the latter having a fairy helping them.
When skills have differences in order to balance them (such as proc'ing something, a different cost or a different potency) they aren't good for role skills. I'm assuming that's why Anticipation doesn't get stronger on DRK to make up for taking away Dark Dance. I can only assume Raise stopped being cross class because of Resurrection, since they didn't want to take that away from Summoner.
The only case I know of where a role skill interacts with an actual job's toolset is how Paladin gets a boost to intervention if Rampart is up, but the thing is, it's not the job changing the role skill, it's the role skill changing the job, which I believe is easier to program.