They are only allowing her to place three turrets that are only a little stronger, which makes her lose her ability to take control of areas since Winston still can come and melt them along with literally every other hero.
They are removing her lock on and giving her range which makes the reason a lot of people chose her irrelevant.
They are making her teleporter her E. Guess they learned nothing from Mercy.
They are making Photon Barrier her ult.
They removed Shield Gen.