The problem isn't the focus group idea (though I hate focus groups too), it's the questions you are asking. The questions are far too general. It seems as if you want to do something but can't come up with an original idea of your own so you are asking others for their ideas.
In the years I worked for producers in Los Angeles, one of the lessons I learned was: A great idea, poorly executed, still has a better chance of selling than a boring idea well executed.
Of course, an original idea, well executed, aimed squarely in the face of high school and college kids, has a great chance to sell.
There you go. I just answered question #3.
Actually, I answered what qustion #3 should have been: What audience SHOULD be targeted?