I'm a nephew of Kishimioto and I got this from an e-mail from him.
Kishimioto keeps family first so he leaks out some pictures from time after time to me.
Here is the image:
For me this is more then enough proof. Tobashi will be the main antagonist of part 3. You can't escape destiny now...
Those are some interesting points. However you forgot to mention that the Tobashi reveal still needs to happen. He will probably be the main antagonist of part 3.
Just after the events of kakashi losing his sharingan, he will unlock Illuminioto eyes. For those that have read my Tobashi prediction, you probably know this will be reality.