Time is coming where MKE fliers are going to have a lot of choices and a lot of low fares from a lot of reputable carriers. They will learn that Midwest not only is owned by some no-name airline now, only exists as a brand, and that brand has been turned into a crappy excuse of its former self because the new owner thinks that people in Milwaukee are dumb enough to keep flying on them.
When this happens, and it'll happen quickly, people in MKE will no longer see any reason why they should fly Midwest when there are options like Southwest, AirTran, and Delta who offer better service, fares, options, ....