What's the next Eeveelution type you want?

We already got a poison eevee

I'm going to go Normal here because sometimes Eevee is just fine the way it is but through a good bond, it could evolve into a rare Normal type with 110 HP, 130 Attack, 65 Defense, 60 Special Attack, 65 Special Defense and 95 Speed. Makes Extreme Speed, Body Slam or other Normal STAB really good and would have solid coverage due to Normal Type flexibility.