Lots of awesome new Pokemon in UU, it's a little overwhelming (but not as bad as I originally thought). There are going to be a shit ton of Pokemon to consider and prepare for since there are so many equally awesome Pokemon in the top tier.....maybe I'd have preferred a larger OU.
Do remmeber, Chansey doesn't need to use Eviolite now. The only reason why 100% of Chansey used Eviolite in OU is because that's the only way it is not outclassed by Blissey. In UU, Blissey isn't there, so Leftovers is now an option. Chansey is great with Leftovers too, as those who played Gen IV UU will know.
I'm really shocked that Espeon is not top 50 and shitty useless (in BW) pokemons like Vaporeon are... When you know that in the high ladder or in tournaments he's one of the most seen pokemons. I'm also surprised that ThundUberus is only 15...
Edit : Shandelure in top 50 is also pretty weird... I guess it's like for Ninjask in DPP ; he's one of the most popular pokemons in the low ladders