Well, with Bob's departure, I had been planning to pick up doing the layouts. And since I had some of the material for the next (not-yet-announced) book in hand, I figured I could drop it into InDesign and see how it went.
I haven't yet done all of the typographical corrections -- and to be honest, I'm not sure if we've done the proofreading on that story yet! -- but I now have a tiny bit of experience at doing layout. And I sent it to Bob for feedback, because he was also gracious enough to be willing to offer advice.
We'll see how it goes.