I'd say that Elven Arcane Archer has been a great success in that the flexibility in combinations it offers is pretty tremendous and interesting, despite the fact that archery is rather poor. Given this, I'd really like to see each race gain a PrE by year's end to expand on the sorts of characters and archtypes we have available.

This could be as simple as finding some way for Stalwart Defender to be acquired by non-fighter Dwarves, or as complex as releasing a purely racial PrE like WF Juggernaut.

I know that there are a few classes that still need a PrE of any kind, and some that still need a full tier III PrE and others that have been waiting for their prestiges to get finished, but I'd rank the racial PrEs just behind Sorcerer and Favored Soul, and ahead of all the rest simply because they open up so much more character design space.

Ideally, they will be a little more balanced as far as accessibility goes than AA is (costs too many feats, but AP cost seems about right, though maybe a little on the high end).