I've still never read the entire script but I'll throw my hat in here.
Firstly, we'll see less of the Doors in the Desert, acidy kinda shit. Oliver Stone loves his nihilistic, super-serious peyote revelations. The closest I've seen to that in a QT work was maybe driving while shooting up scene in PF, but I haven't thought much about it so there might be more. Certainly nothing as severe as what Olly Stone likes to use.
It's gonna still have commentary but it'll have a sense of humor. Bobcat Goldthwait on one of the interviews for "God Bless America" briefly discussed QT vs OS's Natural Born Killers and likens Oliver Stone's sense of humor to that of a Vulcan. QT will have something to say with his script but he won't say it like such a self obsessed dickhead. (Keep in mind, I don't hate Oliver Stone or his films... but clearly neither does Oliver Stone.)
As far as casting, I have no idea. QT does have a certain group of favorites, particularly back then, so it's not madness to assume we'll see at least some usual suspects. You could use QT favorites that got smaller roles in Pulp Fiction than they had in Reservoir Dogs. Let's assume this is the case for a moment...
Journalist/Wayne Gale: I think Tim Roth would have made a great journalist character. I find his career to be a little underwhelming for his level of talent (just watch Rosencrantz and Guildenstern are Dead, for chrissake). We'll give it to him. His Aussie accent will certainly be better than RDJr. at any rate, no offense to him of course.
Mickey: Honestly, QT himself is just "off" enough to probably pull off a version of Mickey with less screen time, if indeed the film focuses on Mickey less than Stone's version. Not sure if Bruce Willis would be good or even say yes. Buscemi is our best bet, really. So, let's say Buscemi gets it rather than Bruce or QT himself. This makes sense because Buscemi barely got any screen time in Pulp Fiction which came out the same year, and then only as a waiter dressed like Buddy Holly.*
QT plays a prison guard.
Warden Dwight McClusky: Of course, Harvey Keitel would be perfect for the Tommy Lee Jones role. Perhaps the only person better than Tommy Lee Jones if that's imaginable.
Det. Scagnetti: Michael Madsen. Gotta be. He even kinda resembles Tom Sizemore. And it means he references himself in Reservoir Dogs which is classic Tarantino.
Expect Steven Wright to still make a cameo.
So now we get to the hardest part. Mallory Knox will be pretty tough and probably won't be as good as Lewis unless it's Uma Thurman. And I doubt it could be Uma Thurman because of her highly prominent role in Pulp Fiction. Any ideas here are welcome.
One thing I can say definitively is that the music will be far better and it will overall be a more entertaining movie if Tarantino avoids the "hipster" element referenced above. I think he will. And I think he'll be nominated for both of his films this year. Expect a more successful, more respected, and more influential Tarantino TTL, methinks.
Vultan, one of my favorite writers (and people) on here had Tarantino making both, but iirc, kept the cast the same as the Stone version. I don't think that would happen unless the film was given to Stone first and then something prevented Stone from completing it. I like the Reservoir Dogs-centric casting better, at any rate.
Thoughts?
*Some say Steve Buscemi's role as the Buddy Holly waiter character in Pulp Fiction is actually Mr. Pink in disguise following his escape from the law at the end of RD. I love that.