I have to disagree on the spells, its designed to be more rough to it can be used by approximation without a grid. Same with the lack of OAs. I don't think they've done much with the armour and weapons yet, from what I can tell that seems like a WIP, but I like how they broke it down with finesse weapons and they seem to be allowing theives to sneak attack with other weapons than just daggers, which adds some versatility and scimitars are now finesse! awesome. I'm liking it so far, but I have a group to play test with to see how it comes out in action.
I think the skills have turned back into a similar to non-weapon prof. from 2nd ed. You have a few specializations, the rest are ability checks. I think they left this blank on purpose for feedback too.
I'll really have to see how it plays out. My group considers of half who started with 1st and 2nd ed. and some who dabbled in 3.5 and play 4e. It will be interesting for sure. I started in 2nd ed, and am DMing.