I had a chance to run a small playtest this past Saturday. The party consisted of three 10th level characters, a half-orc cleric, a human fighter, and an elven rogue (build as a ranger).
This post will relate specifically to the skills and feats. I will post the impressions on combat and classes in their respective forums.
Skills
While we had no real problems with the skills themselves, a couple of observations were made. The upside is that the current Pathfinder system does make it more likely that non-rogues are good at a few roguish skills, such as Stealth and Acrobatics. The playtest fighter had both skills and used them to good effect. The downside came from the rogue’s massive skill selection. I cover this in my post on the Races and Classes forum, but the gist is that the rogue currently steps all over the ranger. I am not sure if this fault lies with the skill system or rogue class.
Feats
Most of the feats were well received, though there were some exceptions.
Combat Expertise: As it is currently written, this feat is nearly useless. The less intelligent you are, the less useful the feat becomes. Why would a character with an Intelligence of 13 waste a feat to take Combat Expertise? If they fight defensively, they get a +1 dodge bonus. Dodge already gives you that and it is a stepping-stone for Mobility and Spring Attack.
Combat expertise also now requires you use a melee weapon. Can a wizard still use the feat when casting a touch spell? If so, this becomes a excellent feat for them in some cases, otherwise we could not see much value to it.
Overhand Chop: This feat becomes useless after a character gains their second attack. No one is going to trade the possibility of damage from a second attack for the 1 to 3 points of additional damage that Overhand Chop adds.
The general suggestion on this feat is to allow it to be used while charging. That will still give it some limited usefulness at later levels. Another possibility is to have the attack daze an opponent for 1 round.
Power Attack: Power Attack has the same problem as Combat Expertise. It is all or nothing and favors high strength opponents. At least it serves as a stepping-stone to Cleave.
The current version of Power Attack also causes some minor problems with backwards compatibility when some monsters in adventures and sourcebooks already have lesser levels of Power Attack figured in (the mountain troll from the MM3 comes to mind).
Turning Smite: This feat raised the question on if a cleric could make a touch attack against an ally to hit him with the healing effects from turn undead. This would seem to be allowed by the wording of the feat.