While I see no reason to be anything but neutral towards most of our MF teams and Adam & Alex, there can be reasons why some other teams already have fans.
I watched two audition videos of Jazmine & Danielle, and they seemed like very regular, funny and cool people. Also, we saw Tiffany & Krista in a video in Argentina, which is probably why I started to like them - they just seemed helpless and desiring to stay in the race, which made me empathise for them. Besides, I ALWAYS tend to root for FF teams.
Those might not be enough reasons to like somebody, but that's the most one can get about the teams at this point. It doesn't mean that I dislike the others and it certainly doesn't mean that my opinion will stay the same when the race starts.