Right now I find it far too early to judge.
Expo hands on are really short, lacking the time to explore. I'll hold my judgement until maybe the final beta, if it is treated as location test.
Also Combofiend said it multiple times that the beta was mainly for network testing and it was also and an really old build. On top of that, the player pool was highly variable and the character selection was 6 characters only.
Walk speed seemed fine to me for Nash. Even though he isn't the fastest his HP sonic boom gave me enough cover to go for a throw. His command normals had a lot of range rivaling Chun Li, sans speed.
His V-Skill is quite good too it's fast, is pretty safe on block, good range and knocks down as an anti-air leaving Nash more time to go on offense in a trade.
According to
toolassisted framedata his moonsault is positive on block, while his mk sonic scythe that has a lot of range too and is safe on block at max distance.
Ryus stubby normals and slower walkspeed seem bad at first, but in exchange for that he has a strong V-Skill that rewards reads and fast dashes to cover distance quick.
Throw range seems to be really short, but that might be exactly what they want. Maybe increasing the back throw range could become interesting.
I'll agree with Shouta in terms of gameplay. I like what I have played in the beta so far.