FWIW, we had about four weeks to write each of those modules (for comparison, in a normal schedule we'd have three months). Pyramid might have had a two week deadline, but that one was definitely less than a month. The quality wasn't a reflection on 4e as a symptom of a workflow collapse.I'm sorry, but, 4e modules as a model? You mean some of the worst written, most poorly received adventures in D&D? Those modules? And, I say that as a huge 4e fan. While I'd love to see 4e stuff make a come back, Keep on the Shadowfell is certainly not one of them.
However, if you look at later ones you might get a clearer sense of what I'm talking about - Gardmore Abbey, the adventures released with the Essentials boxes.