Sometimes I feel as though there should be some sort of central WiP file repository.
While I do think people should be entitled to finishing their own work, since this is a fan project, they should also be fully entitled to not actually do any work, but it's a huge shame to see stuff get just to the point it is looking awesome before turning into vaporware, so It would be great if other team members were able to pick up where someone left off if they disappear for too long.
I will grant, though, that this is a very minor case of creator abandonment, there's a couple models that started work a couple years ago.