I can see a Sableye evolution being made, and perhaps a Mawile evolution as well. I believe there was some discussion about a Pinsir evolution, as well as an Absol pre-evolution/evolution. I'd like to see either, or even both. Although I think creating evolutions for Pokémon who were previously without an evolution is creative, there's also slight potential for the franchise to go overboard with the concept. A few added here and there should be fine, but not a whole lot.