Probably worth adding to this thread that the notes for 1.19 include a new open world dungeon (albeit for low levels), the caravan escort thing which will take place out in the world and pave the way for hamlet defense which will undoubtedly also be open-world, and new non-instanced NMs (one of which, the coeurl, is entirely new). I'd say these are good signs they aren't abandoning open world content for a "raid or die" setup, although the fact that beastmen strongholds may be raid-only is a bit disappointing.