Based on what's been shown/announced so far, probably not. With UI changes, they're trying to make it look like iOS and for me, it's something I would disable (I think you can based on the preview). Also, the new Expose where all the windows are grouped based on their app is also a downgrade. I don't like where I have to perform an extra click just to see all the windows for that app. The current expose, I think, it's pretty good as it is. As for launch pad? I already do something similar with my dock and stacks. All these things look like they can be disabled, or not be used at all which makes me ask why I would bother to upgrade if I have no need for these new features.
It's still early and I'm sure there's more but as of right now, an upgrade is out of the question until I see more that I would actually use and not disable.
It's still early and I'm sure there's more but as of right now, an upgrade is out of the question until I see more that I would actually use and not disable.