I think RWG, since I think whatever works in RWG in terms of quests and POIs would work in Navezgane as well, since if you can get stuff working on a dynamic random world that may or may not have certain elements such as quest POIs, completion points, etc. then it should be a relatively straightforward process to put that work into Navezgane since it's static - so would boil down to a reduction of variables from how I see it.
Personally I never play on Navezgane unless it's for an event or something where we need a map everybody knows. The last time I played Navz was back in A15, I haven't even touched it on A16 for actual playthrough purposes, only modding purposes where I need a quick loading world.
Now what WOULD be amazing is if players when designing their own maps could have those maps randomly generated in RWG. So for example instead of finding a collection of towns in an area it could lead nicely into a player made city or location. That way thinking about future workshop integration with Steam Workshop, all you'd need to do to have more random maps spawn in RWG would be to download more maps from steam, which could be either dev made or player made. So if I downloaded 3 separate maps I could choose to play them individually or there would be a chance that on my next RWG game that these maps may or may not generate in the world.
Or you could make it so that you needed to travel through radiation zones to get to the other maps. Maybe an endgame thing where you have to reach a certain point in one of those player made maps to 'escape' the apocalypse and get taken to the White River settlement, but to get there you have to don a hazmat suit and traverse the radiation zone which would have tough bosses, zombie bears, rad cops... All sorts of nasties that you wouldn't hope to take on without sufficient gear and experience. Like an area that pretty much says 'If you're under level 190, you're going to die horribly in the first 10 minutes unless you're a lucky son of a gun'.
