I have the rule set, but since i don't have any tabletop groups at the moment, i haven't been able to actually see any of them in action. Having read through the rules there are some things i like and some i don't (but thats always the way) there are a few places that seem to be the common sticking point for some people though.
Going back to Hit Dice for healing
Armour types, since light/med give a dex bonus, and Heavy doesn't. But a good dex bonus puts your AC at the same (or higher) than heavy armour.. and you get more bonuses for having high dex than high strength.
Skills being completely gone. So, i would really like to see some actual playthroughs.