At this point, my primary concern is whether Tigerfog is well, and what his wishes are if and when he decides to return. The story can't be a priority unless he decides to make it one and not before, and that's going to be entirely on his terms. He's been writing it for the better part of two decades, so I certainly wouldn't deny him a years-long sabbatical, especially considering this isn't even his first such disappearance. We also need to be prepared for and respect the possibility that he may no longer want to continue the story, or even return here at all—I don't know if that's actually the case, but we should be ready for it all the same. It can be sad, but with creative types, sometimes it just happens. So wish him well, don't give him a hard time over his projects, and for now I think that's the best any of us can reasonably do.
He was on twitter Nov last year so I think he's fine We wish him well of course, but I think he'd okay which is the most important thing!!