Now there's a nice reason to recapture the oldies. I'm liking a lot of what I see, particularly for Ninetails (Drought, whoo-hoo!), and the fact that RBY/GSC legendaries have something other than F*@#!ING PRESSURE.
^THIS
This honestly has me rather curious as to how the new metagame is gonna shape up, as we'll probably have to scrap a lot of old strategies and come up with new ones. Some abilities that caught my eye:
-Lanturn with Water Absorb? Oh the mindgames...
-What genius put Lightning rod on Seaking?!
-It's so great that starters aren't limited to the stock "pinch" ability anymore
-Electrode's Aftermath could be useful if you can't pull of an Explosion in time
-Sharpedo with Speed Boost?
-Who in their right mind would use a Soundproof Abomasnow?
-The polar bear gets swift swim? This changes everything!
These changes range from game-changing to downright pointless, but it all adds some new flavor to the old guys so that they can compete with the new 5th gen pokes.