Im thinking about it and it makes sense. They both run well off of Dex/Cha. Vampire is a beefy front line character who makes good use of the Hybrid Binder's Pact boon and can hit somewhat hard. Binder gives the Vampire some options beyond being a second rate Essentials Striker. You could build this character as a mix of control and melee damage not unlike a Beast Druid, and it would work along the same lines. It's a little feat intensive and level 1 might be a little rough, but I think this might actually work.