That sounds interesting really.  Probably something I'd pick up and read if I saw it in a store.  I hope you proceed with your idea. 

Per vamps and sunlight - yeah, it's become ingrained now.  I can go either way on it.  It can be an interesting plot device that they can't come out in the sun.  It certainly takes away some of the "OMG! Vampyres r soooo cooool!!!1111" aspect, in that it would certainly be a huge drawback for someone's lifestyle.  On the other hand, vamps that can go out in the sun can almost be a bit more insidious because you could pass them on the street every day and never know.  (Just so it's balanced out by other weaknesses/drawbacks).  I guess I like for vampires to have at least one major aspect that would make someone think twice (or thrice, or four times) about wanting to lead that life. 

The "estranged couple has to team up" idea is something I've seen in general, but not with vampires.  It would be interesting to see where you could go with that.

Twilight, it ain't.  That whole series has some epic rants attached to it on my part, believe me.

There's a hate thread somewhere in the Media section.  I'm sure your opinions would be greatly appreciated.

"How's it goin' you old bat?" is not a good way to greet a Red Court vampiress, no matter how clever it seems at the time.

When you say Government, Conspiracy is close behind it.

Kind of amusing that I stumbled across this thread right after watching Bug.