Consistency would be nice. I'll even give you a stronger word for it: integrity.
But you didn't ask for consistency. You asked for one specific thing. Why that one thing rather than something else? Why not something more general?
It sounds like you don't just want him to be consistent. It sounds like you want him to grind the axe that you want him to grind, or else like you want to discredit him while he's grinding the axe that he wants to grind. And it sounds like you want to hide that behind asking for consistency, which is a really dishonest and cheap rhetorical trick.
Now, it's possible that I'm misreading what you're trying to do. But you sure come across that way, at least to me.