His age (or perhaps lack thereof?) is one thing. Not many people would be interested in romancing a character old enough to be your grandpa. But isn't his whole ageless thing a little like Viconia or Aerie, in the sense that they could be centuries older than a human PC? THEY on the other hand, are very much available for romance, no questions asked. At least he doesn't LOOK like your Great Uncle Bob, right?
Most especially, players may not want to romance the mass murderer because of his gruesome actions. Having him as your handy-dandy dragon decoy might be all well and good, but his actions might be too much for any lawful good character to look at him in a romantic light.
If a PC wanted to redeem Brythe or even be the first one to really just ACCEPT him and his past, would this (hypothetical) romance be any worse than the, imo, somewhat incestuous Imoen Romance or the upcoming SAREVOK romance?
I'll be the first to admit that Im a very strange person who is likewise attracted to strangeness. If Brythe isn't the most interesting new NPC I've seen in a long time, then I'll go ahead and paint my car with a blue highlighter.
Okay, regardless of whether or not my rather pointlessly long rant goes ignored or not, I will definitely dowload this mod when it comes out.
You've got me hooked. I love Brythe. And I love you guys for dreaming him up! 
