Are these really QoL changes though? The first suggestion would be a DPS buff, unless you're suggesting they lower the tick potencies on Miasma. Second one would be a flat out buff, unless you're again suggesting to severely lower the potency. (And actually I quite like SF the way it is now, being instant cast is nice to weave in.) And the third one is basically removing any penalty from using Dissipation as a DPS tool, as in the MP costs.

I have a feeling this is more verging on "buff SCH please" rather than QoL changes. Buffs that we really do not need, except maybe a little look at Selene.