They did stuff specifically to make the combat seem more responsive- ie when you hit a hotkey you actually seem to do the action. Worked well enough overall.
RvR is much improved population wise, they put a lot of rewards in for open RvR but it depends what server you're on too. People migrated to one of 3 or so servers, the rest are pretty dead.
I haven't logged in in about two weeks though. Started back into LOTRO and despite the fact that on paper WAR has a lot more going for it - scenarios, RvR, public quests etc, I just don't feel the desire to log in at all. Think it's the class imbalance, I just get frustrated knowing that if you come up against certain classes, you might as well just suicide.