What Healer kit (not encounter) change would make GCD heals NOT bad gameplay?

[Aravell]

What’s the functional difference between that and the original proposal of “spam GCD healing and weave damage” if a “rotation” can be broken at will based on changing needs in the fight

Like sure you could argue medica -> medica 2 -> cure 3 is a rotation but if you can replace the medica 2 with cure 2 at will is it even really a rotation

I did mention MNK framework, their rotation is interchangeable depending on what they need at the moment. I also mentioned that it would be effectively pointless unless they added interesting effects to each spell.