Lets see how much of that I can answer...
I sucked at using Ryuenbu, lol. I'm so used to NOT using it in other games due to slow startups and such, that I rarely did anything but try to anti-air with it's
version, because of what Kane said.
Not sure about the damage scaling, I used Shinobi Bachi DM in the scrubbiest of ways: to land Chip damage!
Someone did it to ME not too much later, as well.
I didn't notice a new voice for EX DM, and I never pulled off her neomax (All the NM's I was trying to keep in memory... I never succeeded on hers, or Vice's.) I'm sure you noticed in the vids, that she has a new Ryuenbu voice that pops up on occassion. It's a bit more straight-forward and less lively than her current version, I like it for varieties sake, but I don't think it fits her as well as the normal XIII voicesample for the move.
Target combo appeared to work close and far. I think both lead to the "far" variation of the B and D, regardless of range.
She was a weird play for me; Her jump normals felt SO GOOD, that I wanted everyone ELSE to be able to match up to the assured hits I was landing with her. But once I landed something, I had too much fun abusing varieties in how to land the target, or using way too much air pressure. My instincts didn't wanna Unlearn Mai and King!
So I never felt like I got into the proper essence of either. Even the 1 time I played Joe felt crappy, after getting used to playing Hwa.
I'm really interested in seeing if Answer, Kane, Bala, or any of the others at Evo could expand or grow any of the things I experienced!