One day, I was letting my brain wander in the hopes of thinking up an interesting story idea to practice writing fan fictions, when I randomly put together ponies for a relationship; Octavia and Spitfire. The more I thought about it, the more I thought it could be an intriguing relationship, whether romantic or not. However, when I started looking around for some reference material, I could find none. Not one fan fiction or fan art had the two interacting in any significant way (except one drawing, but let's not talk about that).
So that got me wondering how many others have thought of potentially good relationships (romance, friendship, etc.) that have little to no representation in the fandom. If you do, post them here; I'd like to hear about them.
And be nice. Remeber, "They're not stealing your waifu, they're borrowing them".