NEEEEEEEEEEEEEEEERRRRRRRRRRRRRRRRRRRRRRDDDDDDDD stuff
Alara reborn has changed my decks in the following way:
Esper: I yanked a couple Parasitic Strixes in favor of Thopter Foundries (life gain, dork regeneration, and card drawing if I give my chromatic stars to it), and put the Filigree Angel in just to see if I can break it.

Red/white: Reborn has some nice red/white cards in it, but I'm honestly going to need to re-tool or just blow up that deck. It smashes early and then just flails about like a fish out of water.

Turbo Mill: Hell, Reborn basically only gave me some backups, here's the (rough) decklist I'm running. It's not that far off the Bill Stark version.

13x island
3x reliquary tower
4x Shelldock Isle

4x Pluemevil

2x disperse
1x font of mythos
3x Howling Mine
4x Jace Beleren
4x Boomerang
4x Broken Ambitions
4x Evacuation
4x Sanity grinding
2x Cryptic command
4x Twincast
4x Negate

The base verson calls for 17 islands, 4 Howling Mines, and 4 Cryptic Commands. I stayed with one font just for the hell of it, and I decided against picking up the other two Cryptic Commands simply because getting them was either going to be a pack crapshoot or cost another $40 bucks on two cards that are getting ready to cycle out of standard.

Hell, the only reason I even HAVE the second one was becuase I essentially got it for $15.

I still stand by my early affirmation that the Uncommons are where this set really shines. The rares/mythics are nice, but can be a bit on the difficult side to deal with. There's also a LOT of really nice 2 cost drops in the set.