Ship you’re curious about:
I’ll be honest, I have no idea what “curious” means in this context but I’m going to use this opportunity to try and get other people to consider some ships with great potential to be all kinds of dark or bad-dirty-wrong I’ve you’re into that.
Abaddon/Dean/Ketch.
Like, just think about this, especially if Dean’s a demon. This is the kind of ship you can do anything with, especially if you wanna get into totally unsafe kinks. Suspension bondage with flesh hooks, gagging, choking, electricity, body modification, people getting thrown up against a wall, drawing blood and leaving big ass welts, scarification, all the totally unsafe and not sane practices of BDSM you can think of. Murder parties, orgies, any dark and depraved thing you could think of – the sky is the limit here. I’m very intrigued.
Ship that needs more love:
All of the femslash. Meg/Ruby comes to mind.
Calthazar needs more love, too. That’s a great ship for loyalty and love.
There are more, of course, I’d be tempted to say all rare ships need more love, but those are just the two that pop off the top of my head.