> 2.) Let me print my own baggage tag at home and drop it at the gate when I arrive

Qantas in Australia does this. If you fly often you can just order a permanent tag for your luggage. (you also get two anyway at higher FF levels)

> 5.) When I get off the plane, hand my luggage directly to me

How do you think this would work? Either the luggage or the people would have to be ordered. The way we're loading the planes and boarding, neither one is true. The carousel time is "free" for the airport, so that's the simplest solution.