So I just want to put out this idea real quick: we could very easily make standalone Logic Node editor inspired by Armory’s logic nodes, that could compile to any Haxe target. Lubos already has UI elements for nodes in his Zui library, and the system is so simple it wouldn’t be hard to port what is already in blender to Haxe for the standalone editor.
You could create Minetest or Minecraft® mods, Drupal modules, Phabricator plugins or anything else. The editor could even run in your browser and you could create a backend that would compile the nodes for you and let you download the resulting JAR, DLL, PHP, JS, or LUA. Wouldn’t that be awesome!