I don't think work on the story is ever what takes DPC much development time. In this episode, as with others, what's consumed most of the development time is his interest in adding more and longer animations, mini-games, and similar elements. If he focused only on the story, he could probably do two or maybe even three episodes a year, but DPC clearly enjoys working on those other elements. Hard to say what most players really want (DPC doesn't do polls on that sort of thing), but no doubt future episodes will continue to feature that kind of content. A massive free roam episode is probably not going to recur, but we shall see.