Got it after work yesterday, have the next 3 days off =)
I played until 3AM, awoke at 8:30AM, started playing again. Just taking a break for a bit to eat and stretch. Great game!
Yes the interface is consolish and it has been dumbed down a bit (light and medium armours now both light, everything else heavy, the aforementioned change in the skills structure, as examples), but almost everything else is an improvement. The gameplay is a lot smoother, especially the combat.
My biggest gripe: the map should be resizable like in MW as it's way to small for me.
P4 3.2 with 2gigs ram X800XT PE and it looks and runs great. I've had 2 crashes when exiting the game, that's it.