Cubby, can you comment on the possibility of getting other PDF-only products as POD? Does the performance of the POD novels affect this decision? It'd be awesome if I could get all the XTROs in one handy book. And apologies if this question was already mentioned elsewhere.
I don't have any specific information, other than to say that the idea is still in the water supply.
My sense is that it's primarily an issue of personnel bandwidth, and other new products taking precedence. I don't think the performance of POD novels affects the desire or ability to do sourcebook POD one way or the other. They're mostly separate concepts and lines of business, as far as I know.
The idea of doing XTROs in POD has come up frequently, it's a fairly obvious target for POD. But there's an additional issue with those in that DriveThruRPG didn't even support landscape orientation POD until last year, and my understanding is that the format
is not cheap. Re-laying out an XTRO to portrait orientation just for POD is probably not feasible from an economic or bandwidth perspective.