Oh, this is an interesting idea. Can't help but wonder if it'll ever get unearthed later, though. It'd be fascinating to see a breakdown of how many people were right about their predictions and stuck to the characters they thought they would, but I'm not sure we'll get data that good.
My swing is towards Ancestral Kung Jin primarily, Marksman Erron Black high on the list to try as well, and something about Sub-Zero is drawing me to him here. Cryomancer in particular looks like he'll have a really well-rounded toolset, and I do tend to get on well with jack-of-all-trades characters.