Originally Posted by
tesni_g
Changing the duration of an ability is exactly what CO and TD did. I loved it, miss it now that it's gone. However, those were specific abilities that extended abilities you already had, so it was a part of the plan to extend them.
Changing the entire recast of an ability based on progress in an unrelated gauge progress changes the healing rotation. Lightspeed has something "kind of" similar with using ED to shorten the cooldown, but it's an incremental change, and it is using ED that reduces the recast, not some status marker on ED when Lightspeed is used.