schneeland
Hero
The only drawback if they don't publish old settings anymore is that they are not opened up for 3rd party content on DM's guild. But I guess that could be changed.I'd prefer they don't bother updating any legacy settings anymore. I'd much rather have a new setting that's actually supported with more than one book. If they're going to do one though I'd like to see a proper FR book. If they're going to have a default setting, then just stick to that.
That being said, having something like "City of Greyhawk" or "(Village of) Blackmoor" as brought up by @Yaarel would probably be enough (since they opened up Ravenloft once "Curse of Strahd" was released if I remember correctly). And maybe such focused books would actually be decent.