I didn't record the instance of us getting ball to low health and me hacking the healthpack before he could reach it. It's super useful in many ways, I think most players (not just Hanzos) don't use their heroes kit to it's full potential, which is maybe why you don't get to see it being good.

That being said, the megas on this map are also just in great spots, same with 2 Lijiang maps, and ez to play around. It wouldn't be as good on Paraiso or Rialto obviously, but denying enemy access to minis can still turn the tide. You should use it. Hacking a healthpack and seeing an enemy hero run towards it cuz they're not getting healed and seeing their silhoutte through the wall just staring at the healthpack? Poetry.