Suggestion for a new MM APP: Kinetic Mastery

it's not a bad idea, the thing is that repel and transference (maybe siphon power too) are the only ones that would, well... Not (quite) be broken on the MM.
Quite a few MM sets include heals, with transfusion and say... Dark. You'd get two of the more powerful AoE heals in the game, and quite a few MM secondaries also provide mez protection, and then there's the fact that increase density is stackable and provides res (one of my strategies on my kin defender is to three stack it to give hard capped resistances to smashing and energy).
Hell, even repel might run into the issue of stacked with other repulsion auras, though not as much of an issue since those tend to be hated and not taken anyway.

Transference works best since minions often have few ways of recovering end on their own, this can indeed end up a problem when they develop decent attack/buff chains, but little means of end recovery outside of pain domination.

Siphon power can also work since it does take some effort to stack for any appreciable duration.

Originally Posted by Samuel_Tow City of Heroes is a game about freedom of expression and variety of experiences far more so than it is about representing any one theme, topic or genre.