(change Giresgokul CD to 30 sec + able to open an eye) or simply (activate Life of the dragon with 2 unit instead of 4)

lance mastery, increase the 5th tier combo's pot by at least 80.

increase Life of the dragon duration to 40 sec. Increase Nastrond potency to 400+. or 320 with additional dot mechanic of reasonable value.

Grant Dragonfire Dive, "dive ready"

Don't crucify me, only one of the many suggestions on this board.