Yeah, a bottle-nosed dolphin would be cool....
one based on a different (smaller, obvs, as Empleon's an Emperor, the largest) penguin would be pretty awesome also, as they could give it water,ice or ground (as penguins are land-dwellers) quite easily, or put something random in its' typing like Empoleon's Steel-typing....
I kinda want to see a Tropius pre-evo....as long as it's incredibly cute, I don't care, as Tropius is fairly cool as it is....
However, tbh, I'm just glad they made Gen V link-able. I had this gut instinct that they were going to separate it off completely, bar the Hoenn remakes, make a new National Pokédex, then extend that in Gen VI with a few more oldies....