Backstory-wise: Could be they were practitioners who had made it to Jaguar initiate among the Reds' hierarchy of not-quite-vamped-out-yet human servants. That's why they were able to survive the end of Changes without instantly aging to death or anything else.

They later traded that Talent (or refined it) for their current state.

I like to think the Sells version of the curse was inspired by the White Court. Papa Raith just switched over to the Red Court version for the satisfaction of shanking Thomas to death.

Would be interesting to see the Sponsored Magic they provide. 

Boiling fry grease-omancy.

Anyone who's ever had a fry burn'll know how horrifying such a power would be.

The thing with elements is that it's really all down to how you fluff it. Fire is the Weapon of Choice for Wizards, but we've seen plenty of more destructive things they can call upon at will -- from gravity bombs to hydromancy-inspired entropy blasts.

And don't forget that Bianca once wore a fricking dress made out of fire.

Aside from that, I'd like to see someone do a flame-based healer. Burn away the injuries of your comrades.

I'm working on a campaign set in/around my hometown where there is no set ANG on hand. The area's a White Court stronghold and they're making it hell for anyone to establish an ANG without their explicit backing. End result: One girl is trying for it actively, and another guy's property has been nominated for it without his knowledge or consent since everyone uses him as a doctor. The Court's been able to block her by backing the other guy and also by accusing her of a bias towards the 'kine.' Which is arguably true, considering circumstances

EDIT: And just to include their backgrounds...

Myra Dougall
   There aren't too many open occult hubs in Myrtle Beach. Most talented people make do by gathering in the new age sections of Books-a-Million or Barnes & Noble. Myra Dougall aims to change that. She's recently opened her own coffee shop at the Market Commons, a very artsy outdoor shopping center about twenty minutes south of Broadway and Coastal Grand. She was originally going for a tavern but White Court efforts have done a good job blocking her from getting a liquor license. They really don't want the local supernatural community having a place of its own to gather around.
   Myra is also lobbying for Accorded neutrality, but the Whites are blocking her there as well. Due to the pledges Myra had to take early in the application process, she can do little to oppose them and can't even support efforts made on her behalf. Admittedly, she doesn't have to do anything to discourage or inhibit those efforts either.
   Myra is a minor talent, little more than a sensitive who knows how to throw down low-end wards and protections around her business and home. Her true power lies in her ability to Listen – she can follow twelve conversations at once and clearly remember every single one of them. Her coffee shop's name is Black Cat Strut.

Muhammad Cohen
   Only in the South will you find a devoutly Jewish man named Muhammad who owns a pork farm and a butcher shop specializing in sausages.
   Really.
   Take a step back and think about that. The page will still be here when you're done.
   Once the shock wears off, Muhammad strikes most people as a fairly nice guy. He's a hyperpragmatist and an ex-Army Medic who attended college on the GI bill. He's also a personal friend of Jack Rogers dating back to their Vietnam days, and about as clued-in as any mortal's going to get without being directly involved. Muhammad is, above all things, a staunch believer in second chances and long shots. He's the closest thing Myrtle Beach has to a truly neutral power and just about every group has, at some point or other, called him up in the middle of the night to patch up one of their boys.
   He's probably the only doctor of any kind who can claim to have performed major surgery on an ogre, and he's got a better understanding of supernatural physiology than any other mortal on the East Coast. He isn't an officially Accorded Neutral, but he's getting there whether he likes it or not – House Raith applied on his behalf just last year, citing him as a better candidate than Myra Dougall.
   Among other things, Muhammad is also married to a Russian woman named Olga who started out as White Court property. Nobody's quite sure what the story is there, but whatever they've got going on is the real deal.

You might want to add demonic co-pilot to represent the dark side of the Red Court nature.

Richard

Better yet: The old soul is still hanging around griping at the Red and trying to compel it to Do Good. Demon with a human co-pilot

The Church came up with the doctrine 'miraculous multiplication' to explain the tremendous amount of fragments of the True Cross that were being sold during the Middle Ages.  (According to some accounts, there were enough pieces of the 'True Cross' to re-build Noah's Ark.)

The gypsy legend of the fourth nail states that because a gypsy spared the Saviour pain and suffering, the gypsies would be forever forgiven the sins of lying and theft.  Not sure how you could work that in, but a Sword that allowed the wielder to commit sins freely would be interesting.

Heaven's Blacksword?

Now there's a scary thought.