What? Progression raiding is what I play this game for (as well as every other MMO I've stuck with since Everquest). I'll be busy working on Omega Savage with my static right from the word go, we are still keeping our healing options firmly open until we see the final potency values and such as well as critically, the actual content we are going to be up against.
As far as the HPS side of things goes, whilst I suspect the Lily system is going to be pretty trashy irrespective of what you're doing, don't underestimate how well PI is going to scale in situations where a WHM is actually spam curing one or both tanks. It'll be usable almost on CD in these situations and will significantly outstrip AST's current potency advantage. Lady cards will be tasty but they suffer the same RNG upon RNG death as Lily II and aren't likely to be dependable for sustained HPS.
And before you play the 'but muh 900 potency Earthly Star' card, I'll be very very surprised if that ability goes live with it's current potency values. I also wouldn't be that surprised to see all 3 healers baseline cure/cureII values get adjusted slightly as well. Despite how close to launch we are, the tooltips we've seen have been incredibly rough around the edges in places. It's kind of unnerving how much tuning Yoshida's team still needs to do.