Okay, here's what I think is/will happen:
-Kyurem is the corpse/zombie of the original dragon (I taught mine shadow ball for this reason)
-Kyurem will probably gain a form that unlocks some kind of ability, think darumitan? (maybe through dream world although not sure how this works since kyurem has no dream world abilities)
-Instead of negating the charge time for kyrurem's special moves, this ability could increase the power of moves that require a charge, thus playing to both a strength and a weakness, low defenses but two high'-powered moves that require a charge.
I stress that a good portion of this post probably makes no sense but... hey, it'
s a speculation thread.