I'm a bit split on it yet.

On the one hand, it should not be interruptible. Period. Making a tank's recovery skill interruptible was a terrible design choice. I don't care what hoops we gotta jump through to make it non-interruptible but it's powerful enough that getting interrupted could mean a wipe.

On the other, making it INSTANT with no strings attached would make it too much like equilibrium. I've been thinking a 1.5s cast time would be appropriate. Like Forbidden Chakra or Esuna. I've never heard of an Esuna being interrupted. Other ideas i've seen thrown around are giving it an instant cast PROC, which i could totally get behind. Ideally, both.

I mean, given the choice between being instant cast and staying as it is, instant cast all the way, yes. It wouldn't even be close to OP, because 1. You can only do it twice anyway, and 2. you're still dealing with a GCD.