Marowak - could evolve into something unbelievable
Seaking - into something like garados but way cooler
Taros - whoa that would be cool
If you could breed evees evolutions into some sort of hybreds
The much loved farfetch'd needs an evolution
Golduck is far to plain and needs to evolve
And dear old drowzee and hypno everyone but me forgot about them when the third gen pokemon came out an evolution of hypno that could take an alakazam