re: Manned options
The smart thing would be for SpaceX to buy out tSpace. tSpace has a nice capsule design, but a rube-goldberg launch system using a 747 on silts (Gary Hudson's influnence I'm sure - he seems to be going with crazier and crazier ideas as he gets older... Desperation from so many failures?)
tSpace's capsule on a Faclon V would be the ideal answer to alt.space access. Add in Bigelow's inflatable stations and you would actually have a real commercial alternative to ISS for NASA to buy and use.