"You are all WEIRDOES." -Sam the Eagle
This is the WEIRDEST thread.
I decided to review what's been added here since the last time I checked this thread (round about page 7). Yeep.
Anyway, an idea struck me that many of you will probably find too sad and/or heretical to even contemplate. Given Doc's age (assuming the character has aged along with the actor), could it be that what propels the Fraggle Five into outer space is that Doc has retired and moved away and someone else is either remodeling the house or (yikes) tearing it down? Maybe their mission/adventure would be to prevent the house from being torn down.
On the other hand--given that different countries had different Docs and houses/lighthouses, they could avoid the issue altogether by having a new entrance into outer space suddenly open up elsewhere. The Fraggles would explore (though why the non-Gobo members of the Fraggle Five would go isn't so obvious) and soon meet up with Traveling Matt. You could even play with the idea that they don't realize it's the same outer space until they find Matt. Then whatever adventure they're going to have could start.