I actually really liked Liz and Marie too! But all in all, James/Jaymes, Brooke/Claire, Pam/Winnie for sure (in being realistic from most recent seasons.)
If they did a Championship season, which I don't think is out of the question for TAR's future, I would love my champs Nick/Starr to come back (I would rather it not be as a regular season, maybe a shorter-summer edition.) But I don't want to see any team that has actually won return again for All-Stars (though it's totally cool Uchenna/Joyce did, probably the most deserving of another chance at a family.)
I would never want Max/Katie back though, Katie had no personality whatsoever, despite her phD she constantly bragged to the camera about, haha. No worries if you liked them - they had their moments, just not as expressive as I prefer teams to be.