If I'm going to be a writer for a living, then there was ALWAYS going to be a point where I needed to put away the sillier gags and start writing a worthwhile story. Whether that was during OOTS or in between the transition from OOTS to whatever I do next, it was going to happen, or else OOTS becomes just a flash-in-the-pan that is forgotten when the rules it satirizes fade from public consciousness. I don't even think I'm there yet, but at least I've started trying.
What it comes down to is that I prioritize my overall development as a writer over the short-term enjoyment of that small minority of current readers that only want to see rules-based spoofs. Because most of the people who only want to read rule jokes are already gone. And because there are more people in the world who enjoy good fiction than enjoy good jokes about D&D, and I'm in this for the long haul.
That said, let's keep away from Mr. Morgan-Mar's webcomic and any bashing thereof. Or my schedule, for that matter.