I still enjoy sending my Sims to the Spice Festival, the Hijinks and Humor festival, and the Romance Festival. So far, the one in HS is boring to a point. I think I've only gone to the one in Mt. Komorebi once, didn't have fun, so why send my Sims? The one in Fenwick? never plays out well, inasmuch as there has never been any proper resolution. No one ever wins, the festival just fades away. Most disappointing of them all.
I do agree, these little changes could be better. And I agree the devs probably feel as if they've done a lot in giving the game more fullness, but I don't think that's so. Adding Knickknacks to a room can really make it homey and nice, but adding too many can cause clutter. I think we've reached clutter, now.