Well all of this is a) premature, and b) immaterial. The veep was never picked until the convention and in the past, people tended not to care as the job was nothing more than drinking bourbon and branch with the good old boys and girls in the Senate and going to funerals.
If he is going to release this ahead of time (a bad idea I think) then he ought to release the entire cabinet or at least the big five, AG, Defense, HHS, Labor, and State and let them run as a team.