If he was alive today...

Good question - dunno. On the one hand I'm guessing probably not. I suspect there would be hints, sequences that head towards it but we'd never actually get there. Because he was the master of suspense and never quite seeing the expected is more effective than the actually showing it - well, most of the time anyway.
On the other hand I suspect if he'd had the chance to show all of Janet Leigh in shower he would have done exactly that.

I don't think it would be graphic but very much aluded to, I do think Scarlett Johansson and Margot Robbie would feature in many of his movies though.

No. I think he'd be at the level of whatever he needed to tell his story. Probably would have been a nip slip or two in Psycho. But Rear Window would probably be about the same. Vertigo: largely the same as it is now, I would think.

He pushed the envelope, but I don't think it was to shock. I think it was to be truthful. After all, one of his biggest digressions was the toilet flushing.

If he was alive today he'd be scratching frantically on the inside of his coffin.

If Hitchcock were alive today, he'd literally be 120 years old. That said, who's to say his films wouldn't be full of R rated material?

If he had been born after 1940 or so, yeah.

Frenzy - made in a post-Bonnie & Clyde era where graphic violence was becoming the norm - is by far his most violent movie. He only made one film after that, the comedy Family Plot, so we’ll never know if he would have continued in that direction, but it seems very likely that any further films would have contained stronger content.

nah