Oh please, Rarity can do so much better than Applejack.
Rarity has crabs? ...I'd still hit that.
Rarity has crabs? ...I'd still... wait, this sounds familiar.
You know what, Sapphire Shores should come back as a villain. I don't know how or why, but it just need to happen. Maybe she takes Rarity hostage and forces her to make dresses for her forever.
One day the show is going to revel that they're actually mortal enemies, and then there will be mass suicides in the fandom.
You know how zap apple jam was "so important" but we've never seen it outside of that one episode. Apparently it's so good that the ponies just gorge themselves until there's not a single drop left.