Words are inadequate

Given Graydon's description of his sales figures I suspect Tor could afford to take the entire series on as a done deal and treat them as new (albeit with a slightly smaller advance than otherwise) once he's finished writing them all.

However, it'd take a very special, very dedicated editor to champion them. They're going to be an uphill sell in marketing terms.

However-again, we're talking about a publisher where some of the senior folks do stuff because they think it's their duty to the genre (e.g. going to vast lengths to acquire the rights to John M. Ford's back-list and republish the lot) even though it's not a terribly profitable use of their time and is an uphill sell in marketing terms (if any author was as elliptical and demanding of their readers as Graydon, it was Dr Mike).