honestly? if you want more works in your rare pair tag, talk to the multishippers
we're already into shipping characters with anyone we find interesting for them
we have a lot of practice at looking at two characters and saying, "hmmm that could work"
we're generally pretty open-minded when it comes to shipping anyone with anyone else (although even multishippers can still have NoTPs)
so squee your little heart out about why you love your rare ship that no one knows about, and nudge your local multishipper to see what they think