I've seen in videos from RPG Maker creators and one of the tips they encourage other creators is releasing a prototype before releasing a demo. I imagine that this way would be better for putting users' feedback better than releasing the demo only when all resources are in place. Correct me if I'm wrong.But basically it depends on what kind of game you want to make.
If for example it is a story-based game you should write down the story outline in noteboks before even starting the editor.