I would love if WHM could have something deeper imbued to the style it plays as a poor mobility healer. Make it more similiar to BLM add a mechanic similiar to enochian that rewards the WHM the longer it keeps consistent (heals/DPS?) instead of lilies forcing you to waste or overheal GCD spells, let the lilies grow into the blood lily on its own if you manages to have consistent dps for X amount of seconds or having regen applied for X amount of time.
Not sure how to make it work but it feels like WHM should be able to be converted into the holy version of a BLM with having a slow build up and a nice rewarding system if played right. I really dont like the overheal or wasted spamming mechnanics.