I haven't been following it, I just watched a Bo15 from that Madcatz event (might have been at TGS?) where a Litchi owned an Azrael. How does Noel look this time around? And Terumi/Izayoi?
I've pre-ordered it off Play-Asia like Kuraudo did, but to answer your Noel question, she's a good bit different. I'd probably say that she's the most different between iterations that she's been in terms of playstyle. On top of that, Optic Barrel got switched up a bit. There is no more short range Optic Barrel shot. 236A will throw out the mid-range one that was formerly 236B, while 236B now will throw out what was formerly 236C. That being said 236C now throws out something called Chamber Shot, which is like a shotgun-type move and almost looks like a Drive-less Bloom Trigger.
Noel in CP seems to be focused more on using her normals in combos and making them viable. Hell, Revolver Blast has an ender that can be done afterwards to make it safe. However, they seem to have really lowered her potential damage output, which I really think was entirely unnecessary. As a result, she's apparently back to B status.
With Terumi, I don't know much about him other than he has 6 Distortion Drives and his purpose is essentially to steal people's Drive meter to use DD's to inflict the pain. I suspect because of that, he can just make Hakumen feel the pain, but I don't have anything other than character design theory to base that off of.