They said in the livestreams that Predator and Dutch are possible if people want them, but said Alien might be difficult.You can take Star Wars, Indy, Predator and Alien right out of the poll since they said its very unlikely to get the Disney license for 1/6th.
So... Terminator wins.
I don't know if there's a significant licensing difference or if they just forgot Disney own Predator as well.