Let's spend all these buttons to make mechanic X.
Then let's spend another button to fully un-make mechanic X even though we already have other buttons specifically to do what this extra button is meant to do while remaining involved and cohesive with the buttons spent on mechanic X.
???
If it's so awful to open as RDM in the way it has for two expansions... mightn't we just raise the resting gauge level, lower the melee chain cost (thereby making melee at least a bit less of a trivial tag-along to the sword-wielding caster), or have Embolden double gauge generation, etc.? Why spend a button solely to make Manification, Acceleration, and the like redundant?