There isn't one at the moment. Eventually there'll be a Big Bad Evil Guy to fight, with permanent good/bad endings associated.
It's very likely that some of the final endings will be based on how many bad endings you got, at least partially.
The canonical reason that the protagonist doesn't send out the clones to scout is because the use of cloning technology is heavily frowned upon, and Vulpis can't handle more diplomatic incidents. To that end, your ship AI refuses to allow multiple able-bodied versions of you to be wandering around at once. There's even a bad-ending where this happens by mistake.