Personally I'll choose:
1. Dani is the biggest threat for Vale next year. Honda has very promising return looking to what Ducati and Hayden said. Michelin I guess will fight back too (but the chance still 50-50 since they have problemm internally inside Michelin)
2. Still KC. His whole package is good. Not as a rider but package. Ducati with Bridgestone.
I guess next year Dani will win the championship not Vale again unless Yamaha solves their speed and durability problem.
And having ride Bridgestone solo will be damn hard since Bridgestone has no data for Yamaha. And also Vale yamaha is the only yamaha to use Bridgestone. There is no support/ helper like what Colin did before. Vale chance of winning the title very small. I hope I'm wrong. Not to be unsupportive but that what I want to say. I got the feeling he'll lose it again.