I like that, not what I would do with such a project, but still nice.
Personally I would open source the engine and tools. In my opinion Artwork should stay original to a game. Now other hobby games will start to use the good artwork and mostly make a bad impression event with it. This will only create a negative force on Ryzom. "Oh, .. this looks like that other really bad game I played once. I better try an other one .. "