Reading through, I think I picked the wrong answer lol.
I do like that Eps can add an entire new gaming experience, and that indeed also includes some variety.
Then again, I feel depth should be the focus. Some of the ideas from EPs are great, but they are often implemented superficially, more like a try-out version. So I really do think depth is the way to go to.
For example, Eco Living has some really interesting features, adding more green or a different style to the neighborhood. Still, those options are easily exhausted and also are not integrated into any other world. I don't think it needed to be in every world, but it would have made sense for urban worlds like San Myshuno or Del Sol Valley. NAPs too feel like an unfished product, after a while you have so many with nothing else to do with it. I'd also say that style wise I would have loved going more into depth, than offering variety. And again two neighborhoods have this very suburban vibe, even though they offer some urban-ish vibe. Port Promise is an amazing neighborhood - to me - but its short on activities outside of the lot (no fishing, no food stalls, no BBQ or public toilets). Oh and my favorite EL-bb complaint, we didn't get those iron bar sprandels, not allowing us to build construction sites.
I feel variety should be seen as offering different packs for different in-depth ideas. If packs offer variety, than it will include something for almost everyone, but then also almost everyone will complain because many ideas will be implemented more superficially. Going more in-depth but with less variety might help people deciding on whether or not to purchase a pack in the first place.