The more I think about Marelli's initial perception about randomly spawning locations in the existing world, the more I like that as well. It also shouldn't take as much development time as creating new randomly-spawning zones and making sure they all link up properly.
If a site spawns in Loria, it would be a q250+ site and offer Lakes materials for Choice and above. If a site spawns in Imperial Dunes, it would be a q50+ site and offer Desert materials for Choice and above.
I still dearly love caves (especially the PR caves that I've seen) and don't want to give up hope for that, but the existing-world spawns would be welcomed too, and perhaps in a shorter period of time than the cavern system. And they could have the chance to offer the very rare supreme mats above-ground, and provide something for max-level players to do.
If a site spawns in Loria, it would be a q250+ site and offer Lakes materials for Choice and above. If a site spawns in Imperial Dunes, it would be a q50+ site and offer Desert materials for Choice and above.
I still dearly love caves (especially the PR caves that I've seen) and don't want to give up hope for that, but the existing-world spawns would be welcomed too, and perhaps in a shorter period of time than the cavern system. And they could have the chance to offer the very rare supreme mats above-ground, and provide something for max-level players to do.