LOT767, I agree, I'd love to have a 707 still flying now, it'd be my fleet flagship. However, I think you'd find that unless Sami codes in some kind of 'nostalgia' setting, people would avoid flying because of its age. Plus, without a strong fleet to help carry it, it'd cost a fortune in maintenance.
However, I do really like the idea. Kinda like having a Concorde or two :-)