I already have an idea about 'new genre' and its quite unique and will be a lot of fun,but as you said about your idea "its impossible to do alone" you are almost right. Everything can be done by one person,just not that good as 10 people working on it.
I dont think you should learn everything about movies,atleast thats my opinion. Everyone is a natural artist,you just have to learn to see the details and recreate them. (Applies in textures,models,levels and everything involving pictures and frames).
And finaly,your idea is good,but I'll share my idea about interactive movies I had an idea one year ago to make a movie wich will be diffrent every time you start it,choosing random variables at the start and playing diffrent parts of the movie based on those variables. This will give each time diffrent endings and even diffrent story 'flow' showing the evil guy laughing at the end,or the good guy getting married,or the neutral guy standing over the corpses of both characters. It'll be great,but I'm too lazy to make it,so I stick to top-down shooters and isometric RPGs