I think a major problem with any mission like this is going to be government and NASA involvement. The red tape and egos involved will crush any realistic plans for making this happen.
Having said that, this documentary resonated with me enough to have me considering methods of funding a Mars mission outside of government funds. Better yet, I believe I have found the answer.
If the mission science is sound and the people involved are as driven to do it as they seem to be, the only thing missing is money.
I need to hammer out some details, then I need to decide if I want to take on the responsibility and commitment required to provide funding for such a mission.
Right now, I'd love to see this happen... but I don't want to jump into it with my eyes closed.