[Chaos]

The 'Pure Power' rework should honestly be its own skill, and Spell Cadence needs to be limited in some way to prevent any sort of multi-hit weapon (see: guns) from enabling once-a-turn combos of...

Attack -> 0m Cast -> 3~4m Cast.

Or, in the case of Fleur,

Attack w/ Crit -> 0m Cast -> 3m Cast -> 3m Cast.

Gets worse with anything that further bolsters Momentum, but you get the point by now.

Aside from that, I'm supportive of these changes. At the very least, the Rank A Invocations would be a very welcome addition and would see interesting use in PvP.