It’s not like they have much time for considering anything very complex! This is the deficit reduction committee. In their very limited time frame before Option B kicks in, they can propose some program spending cuts, propose elimination of some tax loopholes and subsidies, and propose some higher tax rates. Those are pretty much their only options. They just don’t have time to work out anything more elaborate. Once they come up with a combination (or possible combinations) of those, Congress has to pass something that meets the deficit reduction goal by the deadline. That takes some time, too.