Were something like this to happen I'd rather they delete Rapture and Solace entirely. Give us a 300 potency, instant dps ability that costs one lily instead and also feeds the Blood Lily as it does now. It'd keep the weaving/movement utility of lillies but open them up to be used for movement and weaving even when healing isn't necessary.

And yes, I know you technically can use them now even when you don't need to heal but it can really be a dps grey area. Were it just an instant, free Glare it'd be a way to keep your GCD rolling productively. It'd also mean some more casts of our base GCD heals (like Medica II) in fights where you aren't able to cover damage with oGCDs alone.

I'm also not opposed to lillies as they exist now, to be fair. I'm more offering this as an alternative to OP's suggestion.