New passive for sure. It's pretty much bland in my opinion, especially in early game when all of your damage abilities are on a pretty high cooldown. Can be good late game when you have CDR and lots of AP, but doesn't feel satisfying early on and may feel like hidden power later.
Q is a must stay along with E. Both of these are completely iconic to her. A year long root which when it ends the match is over and E gives you the power of an Olaf ult for 5 seconds, so long as the shield holds from magic damage.
W I feel could change. It's just not that interesting of an ability, only really used to help farm, heal off of minions, and combo with Q. It could be replaced with something better.
Ult is... well... I have mixed opinions. On the one hand, it's a giant root effect that could help set up Q targets even, on the other it's basically a Amumu ult that has a bit much of counterplay with delay and enemies walking away. Maybe it could work if they somehow buff it in a way to make it feel a bit better but I'd honestly wouldn't mind if they tried something new (but bullshit broken or stupid).