Hmmm, let me take a shot at this and give my opinion:
JamXWendy
Sarah got me into this one, but I must say that I find the idea to be utterly adorable. I can understand that people go like "No, Jam is cool and Wendy is nerdy-like" but actually that is what makes it so attractive to me. And besides, to me personally, Wendy doesn't appear all that 'nerdy', as in: weak and uncertain. She is more like a whizzkid who is capable of retaliating when nessecary. One fact that I take into consideration is that Wendy moved to Canada from New York and that Jam is a fan of the New York Rap Scene. The thing that made it definite for me was the screenshot of Jam standing with Wendy and the little heart-speechbubble popping up above him.
TommyXNancy
Another one Sarah got me hooked on. I don't know, but I just kinda see it happen. It's more like that they're both peaceloving (at least in the three first games) and that they are both types that tend to stay OUT of trouble. And somehow I see Nancy being the one that comforts Tommy when he's upset, since she appears to be the type that takes these carings high up.
As for SlashXNancy... not to be offensive, but I get the SoraXKairi idea about this. The love interest (or the idea for it at least) may be present, but to me, it's not that special enough to actually develop.
Finally:
LindaXNicole
I actually don't have a lot of gay couples I like, but this one does seem... different. I have no idea, but I just like the idea of these two rivals secretly getting along, just like Pamela said in one of the cutscenes indeed. Because even though they act as if they have little in common, they do have similarities. It's that their fathers don't like each other, or else they could have been best friends for the same count. Ofcourse those two being both too proud to admit it to one another, at least in public.
So that's my humble opinion about things...
