here's what i think happened with the whole uber-S14 representation:
they casted Amanda and Kris b/c of the U-turn (I mean, they prob. would've won if it weren't for that, and maybe got a little more facetime too...)
Then they thought, "Wouldn't it be wonderful to have the team that U-turned them back?!"
That's where Margie and Luke come in
And, "You can't have M/L without Kisha and Jen. Their rivalry made S14!"
then they looked at the fact that M/L had a lot of enemies already, before the race even started, so they threw in Cara/Jaime
for Mel and Mike, they were prob just like, "why the eff not?" at that point
and that is why we have 5 teams season 14 teams