To me more content is almost always an upside, at least as long as it is fun and makes sense. The only scenario where "too much content" is bad, is when there's a risk that a dev will stop working on the project before it's finished, but I don't really see that happening with WaL (or SS for that matter).
Or to frame it differently, I have seen many games which should have lasted a lot longer and were finished way too quickly, but I have barely seen ones which should have finished earlier.
WaL does have the advantage of not being as complex as SS. There are no real choices, no real mini games, no pregnancy for everybody, etc. and as such each update will feel a bit more substancial, kind of like Roxxy's update did here in SS, because there's less time "wasted" on optional/alternative stuff.