Why bother to have an AG when it’s actually the deputy AG who runs things?
Well, if Barr comes, and Rosenstein goes, that won't be the case any more. I think Sessions got soft in the head in the year or two before he got the job. Sometimes it happens that someone fades and isn't up to a job he takes.
Barr won’t make a bit of difference, although its hard to imagine anyone who could be worse than Sessions.