As for the brewers They are not very good, and I'm being nice, thing is though unlike the mets nobody was predicting them to win 95 games this year, so in my opinion the brewers are not really underachiving they kind of are where I thought they would be, a few games over or under 500 seemed about right for there roster. Thing is if the cardinals aren't very good. Nobody will be in the NL central, although I'm starting to like the pieces of the reds (They are probably a year or two away, but I think there is a chance that if things go right they could be good and take the place of like the brewers were for like a 4-5 year span), but they have lots of prospects now in the next year this is where a smaller market team needs to start spending, this is my issue with smaller market teams, I get you can't compete every year, with the spending, but what you can do is spend more and fill those holes after your plan of stinking for years and loading up on prospect comes to fruition when they are turning into good players. The reds will have there chance, because I really like what is going to the big leagues, and what is still on the way in my opinion.
