I think I really liked the FORWARD role, but not the back-roll. So I'm okay with the dodging/dashing, but they should make him cover a little bit less distance, that way he can just escape any hit without problems, seriously. I've already seen versions of the game that were way too easy. I know some of them could be due to demo purposes and I really hope so, but animations such as this one are part of why Geralt doesn't get hurt that easy in TW3 apparently.
The main problem in TW2 for me was that we had VERY limited SPACE to actually move around and dodge monster attacks. Now that we have an open world I think the system of TW2 (with a few tweaks here and there) would have worked perfectly.
Don't get me wrong, I like some of the changes, I also like that enemies attack at the same time, that animations can be interrupted and stuff, but to keep the difficulty animations should take half a second to be interrupted (meaning unlike in TW2 he CAN interrupt animations before finishing the move, but it will still take a second) and those dodge distances definitely have to be adjusted.
As for the toll, I would love to see a forward role or a role to the sides, but backwards I think the dodge is fine.
The main problem in TW2 - like I said - was that basically you had to dodge all the time because you couldn't properly parry, that the sword movements were way too "heavy" and took too long (for a Witcher) and that there was no space to actually dodge away often enough.