I wouldn't plan on anything long term, as in a few months. Plan for the worse. TDYs are very desirable for places like Great Lakes because housing is paid and generally you also have a schedule. You stay busy flying, and have free housing, perfect since you're getting paid so very little anyways. If you're going to Great Lakes because you might be an upgrade at a MKE TDY in a few months, then you're obviously going there for the wrong reason. It's a good thing lakes has only one base because generally EAS and prop airlines are outstation based, that's probably the only thing going for lakes. Nothing like being displaced to a hole in the wall place every two months...