Does Vampire Kingdom in space sound like a cool story idea?

I had an idea for vampires to essentially be alien despots that rule semi-benevolently over a variety of alien races. Advancements in science have removed the need to prey on people and its considered barbaric and frankly unsanitary to bite people. So they basically rule as a vampiric aristocracy seeking to expand their dominion and bring other races under their firm hand. Because the blood cloning labs need materials and aliens going extinct due to war or ecological collapse is just not good for the vampires in general.

As for the vampires themselves, I was thinking they would be science based as much as I can and be humanoid similar to the typical vampire like Dracula but with a scientific twist on their features.

What do you guys think?