I would've liked to see Stunfisk have an evolution. It's just a stupid Electric/Group Magikarp-like fish.
And Basculin needs an evolution. It's boring being a single Pokémon. It needs one.
Emolga should evolve into MEANmolga a BIG muscular pokemon that gets dynamic punch.
And while I like the Karrablast and Shelmet evolution happening due to being traded, I wouldn't mind each having a "natural evolution".
But aren't the antler-branches the main selling point of its season-changing abilities? "Sawsbuck" is just the English version of its name, anyway . . .i think Deerling should have a female evolution.
"Sawsdoe"
I'd like to see Patrat evolve.
...and Stunfisk.
I would really like for Keldeo to get an evolution.