I think it is a great idea. When I studied at college, I wanted to do all this 'dirty work' of writing essays about some nonsense done for me. We had to write a lot about happiness, the sense of life, etc., which I could explain in a few words. However, the bare minimum was always about 150-200 words; I lacked fantasy, which was a huge problem for me. Sometimes I paid my friends to write it for me because I could spend about 3 hours on such a simple task, and I didn't want it. Now I use an online service helping writing text when I need it for work. But your idea is also great for those who want it to be written by a real person. Good luck!