hmm not sure on the 1999 front
the fact the TB movie is going ahead means that Gerry and Sylvia must have come to some sort of arrangement
as to 1999.... when the series ended I gather the lifesupport on Alpha was failing leading them to evac to a (close to) suitable planet.. and the message that Saundar Baines sends back to earth... becomes the signals that were coming from Meta....
hmm.. I suppose they could carry on 1999 from the point of the Colony.. but where to go from there?