Played a couple matches with her. It's a better improvement than I thought. I don't feel like I wasted a long cooldown defense ability anymore, because I can pop it on and off basically whenever I want. You can kind of make a choice between tanking and doing damage at all times. The ult changes are surprisingly good too, because it now charges faster, and you can still stay on the attack (or at least Gear of War it) while it's going off.
I think the one change I'd want now is moving at full speed while firing. It's still too easy to just run away from her.