I haven’t tested completely but I do feel like heal mastery received a helluva a buff for solo hybrid or caster if you aren’t sacrificing int.

I change my vote to yes.

I voted yes, but not because I'm particularly interested in this change specifically, but, I have long wished that Masteries worked in different ways for different charms.

Some examples, just to have a little fun with it:
Lightning Mastery adds a chance to gain extra flat damage, based on int and charm tier. This would go well with the wild nature of lightning charms, with their large damage range.
Fire Master adds a chance to explode, dealing extra damage to enemies near the target.
Ice Mastery adds a chance to create an ice barrier around the caster, slowing and dealing heavy damage to attackers.

Just seems cool to me to add different abilities to the different spells, and doing it through mastery makes it more fun, and makes your gear feel more impactful, in more diverse ways.