not being one to speak for the people at goodman games, but .....................
wiser's work is awesome, and we all love it, but it doesn't quite fit the old school mode, right? maybe for the newer fantasy factory stuff, but unless we find a 3d rendering in one of gygax's forgotten manuscripts, my money says we won't be seeing them in goodman's stuff anytime soon.
just my 2 cents.
While I agree with you, I think that if it's old school in spirit then it would be fine. For example, there are some things that DCCs do that the old school modules never (or rarely) did - things like having handouts, interesting faux-parchment maps like the one for Castle Whiterock, a music CD for DCC 34, etc. So I think there's some wiggle room in the DCC business model (of course, Goodman Games is the final determiner of that).
A map like NtW's final pic of the huts atop the Goblin Spires - the one that looks like it was a rough sketch - has that old school flair to me. While things like that may be hard to do from a technical perspective (it would be for me, because I haven't done it before!), they are done with the same kind of openness, honesty, and raw love that I think typifies many of the old school modules. As long as those qualities are there, I think such artwork would satisfy most of the critics. And certainly if in the old days they *could* have done 3D renderings, they certainly would have!