What exactly are you trying to say in this because it seems like a lot of strawmans stitched together to try and make something resembling a point. What exactly would change about combat encounters if they reverted back to a 2.5s cast time on our filler spell? Movement requirements weren't exactly uncommon in ARR, HW or SB content before the change to our cast times so what's the difference in ShB content and beyond in that regard? Our Healing GCDs at that time also had the same 2.5s cast (or longer in some cases) as our filler spell, so what exactly does that have to do with whether we DPS or Heal? What does it matter if you heal with a GCD or oGCD when the end result is you're still healing to clear content, with the only difference being that GCD healing makes it more likely to hit enrage and failing than oGCD weaving. If anything, they need to update GCD heals to be DPS neutral so that they fit into the fight design enforced by the game since its inception, because it's been mathematically proven several times that the minimum ilvl that the Devs set to clear content would be impossible UNLESS the healer was also DPSing and even in the cases when content could theoretically be cleared without Healer DPS, the other players in the group would need to be at the highest possible percentile to actually clear it, making it virtually impossible for 99% of players to ever do that content in the 1st place. The Devs aren't going to change that anytime soon.