Right now cure and physick are very limited as cross classes, as they rely on the magic damage and MND stat which only healers use, making it too weak on other jobs and not needed on healers as they have their own version. So what if SE changed up how cures work to make them viable to other classes and even useful to other healers as cross classes?
What if physick was INT based?
First let's look at it from a lore point of view, mind, kind of a vague concept but I imagine it to be like an inner peace and awareness of the world kind of thing, which goes with the lore of conjurer and cure, but what about physick? The name kind of suggests it's more of a medical thing, now I've never seen a Tibetan monk perform surgery before, but I have seen a lot of learned doctors do it, so intelligence as the stat to govern physick makes sense to me.
Next let's look at what effect this would have on gameplay. Physick would become a viable cross class for Blm and smn, as well as whm, allowing blms and smns to assist heal effectively if needed, and allowing sch and whm to give minor healing without dropping cleric's stance, it would also make cure a viable cross class for sch as they would need a mind based cure for when out of cleric's stance.
The only downside to this is it means that sch HAS to level cnj to get cure and cleric's stance to be viable. But those are both very low level moves (below 15, the required level of cnj to unlock sch) which makes it far more reasonable than the requirement of war and drk needing to get gla to 22 for provoke, since you need to have these moves available to unlock sch in the first place.
What if cure scaled off of both weapon damage and magical damage and Attack power and healing magic potency (whichever is highest on the job using it)?
This would make it a viable cross class for PLD again while still being weaker than whm cure, due to weapon damage and STR on pld being lower than magical damage and MND on whm. This would allow pld at 60 to keep up in self heals with war having storm's path, equilibrium and inner beast and drk having souleater and abyssal drain, with something other than clemency.