Captain Obvious here, but the pitching has to improve. Spending money just to spend money gets you into problems, but sometimes you get what you pay for.
The Brewers entire pitching staff has a cumulative salary of 29 million dollars. Only Chacin and Anderson make more than 3 million and they are both in the 6-7 range.
There are five individual pitchers that make more than the entire Brewers staff and there are 86 pitchers that make more than Brewers highest paid pitcher (Chacin).