yeah well it doesn't make any sence because the most of development has been for Sparity, now we only need Rarity >>> Spike. Of course RariBlood sucks but at least is a very discarded pairing, because of chapter 26 of s1, I mean Rarity already knows he's not what she wanted at all. Fancy Pants looks like too old for Rarity, but at least he showed he's not a bad guy. But Spike is a lot better for a lot of reasons, for example, they have a lot in common even when they're from different species, for example, both like gemstones, like to go to sleep early, and Spike could be also a link for Rarity to make bussiness in Canterlot (like he did in episode 14 of 1st seasson). Also Spike doesn't have chance of being with dragon, as we already noticed in Dragon Quest, he's more like a pony. Also, character development for Rarity would go forwards if she shares a romantic interest for Spike, because she's suposed to have a beautiful heart, able to love the little dragon, even if he's not the stillion of her dreams (just in appeareance I may say). In chapter of baby cakes, we see Rarity's not interested on babies, so it doesn't matter if she can't have descendants with Spike, this is even an advantage because she's more interested on designing dresses than anything else. Also, she's the only of the 6 manes interested on finding her true love, and occurs to happen that someone is already interested on her (Spike obviously). Finally, her element is generosity and Spike's supposed to be greedy, but thanks to her he's capable of being generous too, so that means a nice character development for him, too. Even though this is a series for kids and maybe I'm overanalizing things, I still thing then why they spend so much screentime developing this pairing if they're going to drop it in the future? it just doesn't make sence at all. I didn't even mind about Sparity until "Secret of my excess", so I blame the show itself for making me a fan of this pairing, I mean after that chapter not only myself but a lot of people started talking Sparity as a serious deal.