By your own definition, most of the lineup is pathetic. So apparently a middling bat or two would, indeed, be an improvement.
I'd also suggest looking at the pitching staffs of the teams you just listed, one through thirteen, and compare them to Milwaukee's. I'm sorry, this is the way they do things, and I agree with it. What you suggest isn't going to happen, and IMO that's fortunate because they can't afford to be that near-sighted.