I don't see how nudity / sex / drugs would in anyway affect her ability to recapture the spirit of Sarah. She's an actress, this is what she does for a living. That wasn't Jennifer Connelly in Labyrinth, that was Sarah, same goes for Requiem For A Dream (which is what I assume you are referring to).
If you have issues with Jennifer's choice in roles, I highly suggest you don't dig into Bowie closet, especially considering he had years and years of career before Labyrinth ever came along with plenty of music and filming material you may not agree with, but yet, he did just fine as Jareth and everyone here loves him.
Also, have you seen Phenomena (1985) aka Creepers (USA) by Dario Argento, one of the masters of horror and thriller exploitation filming? It is a very graphic horror film in which Jennifer starred in before Labyrinth, I don't think you would like the film if you were to try and compare it to Labyrinth, but it just goes to show you, that even at a young age, she was very versatile in her acting ability.
If you have issues with Jennifer's choice in roles, I highly suggest you don't dig into Bowie closet, especially considering he had years and years of career before Labyrinth ever came along with plenty of music and filming material you may not agree with, but yet, he did just fine as Jareth and everyone here loves him.
Also, have you seen Phenomena (1985) aka Creepers (USA) by Dario Argento, one of the masters of horror and thriller exploitation filming? It is a very graphic horror film in which Jennifer starred in before Labyrinth, I don't think you would like the film if you were to try and compare it to Labyrinth, but it just goes to show you, that even at a young age, she was very versatile in her acting ability.
You know, I'd love a decent sequel, but I doubt we'll get it. First off, the sequel would need to involve the original actors.
While I can't speculate for David Bowie, Jennifer Connelly had made her own choice in acting. She's done a lot of nudity , and not just a little peek either. I'm just not sure that even if she did agree to a sequel, she could recapture her role as Sarah. I'm not saying she doesn't have the talent to do it, it's just that Sarah's character might be harder for her to recapture, now that she's older and had developed her own style.