Things such as shaders or Cubic models should be easy to copy from one project to another. It would be nice to have an "export asset" and "import asset" option, or some way to import desired parts of an existing project via a menu.

Sorry it is not really related (except about the "easily share assets", but I ask myself if we could make a kind of communautary account on http://opengameart.org/ in a way to share all the assets, art, code, shaders, templates and prefabs we build of the community.

I am imagining a tool where we could (maybe in the launcher) import and export inside a big community bank of assets for superpowers, and help each other to build games collaborativly in this way. That would be nice, sorry I day dreaming.