Is adding a Bricklink reference enough to republish a part

[Orion Pobursky]

I think the content, and correctness, of the header is equally important to review. 
Are you saying that we should not pay attention to the content of the header in a review?

That's not what I'm saying at all. What I am saying is that header changes for already official parts can be fast tracked. This is something that we already do.