I guess if I'd done all that work on lobster and then bipolar built a ray traced voxel engine on top of that, end game would be to licence the engine. You have something here that the other game engines don't have, and something Minecraft is not likely to have (they are pretty stagnant development wise). This is easily 100 times better than Roblox. If you focus on making the world building tools easy to use and modding/game design you could easily be the next big thing. Don't get too bogged down in game design other than to use it as a proof of concept to help you understand what game designers will need.