Anytime Sombra’s in a decent or good spot, the demand for nerfs are always in hot pursuit of her. I never see anyone complain about a hero as much as they do about Sombra, and I’d wager it’s because they signed up for a fps and can’t aim when Sombra forces them to.
It’s her selling point, her redeeming quality, the reason you choose her. You sacrifice damage in favor of disabling enemies and hopefully picking off the back line, if they don’t pick you off first with better aiming.
If they had to nerf Sombra, I’d prefer EMP didn’t strip away shield health. That’s it. She’s in a great spot otherwise, so learn how to aim and you’ll realize Sombra’s not the problem, but rather you are.