No baggage airlines
I was thinking of the problems that the airlines are having with screening luggage now that people are putting larger bags and more bags through due to increased security restrictions. When I thought back to our trip to California my general take was that baggage as a whole is a major pain in the butt. You have to get to the airport early because of it then you have to wait longer afterwards because of it. I heard on the report that some people have started to Fed-Ex their luggage to their destination in advance. This makes a lot of sense and could be taken to an extreme for an airline such that it covered "No baggage" flights as a specialty and re-routed all luggage through a non-carrier route including delivery to and from the doorstep of the passenger's leaving location and destination. That way when I got to my arrival city I would just need transportation to my hotel and my luggage would already be there when I arrived. If there wasn't any luggage on planes then they could board and leave faster with less time to turn them around, have less security issues with the baggage, reduce overhead related to handling the baggage in expensive airport locations and with large numbers of staff. Maybe the planes themselves could be re-engineered to hold more people or provide better and more comfortable seating on the plane because there wasn't any baggage on it.
Even if it doesn't happen... it would be a pretty cool concept.