Uh, well it sure is an interesting idea.
Though it's too restricting.
The current buzz word in the gaming industry is "open-ended" gameplay. I personally prefer open-ended RPG's so I'm glad more of them are being developed.
Btw, if you want to somehow be a game designer, you should try applying for positions professionally, because unless you're already in the industry, or you have a degree in an applicable field, you probably won't get the job.
If you're going with the "free lancer" routine, you need a professionally written proposal/plan that you can send. Most of the industry won't bother accepting such proposals though because they usually have plenty of their own sitting in filing cabinets somewhere.
When I write a proposal, I use the inverted pyramid format. Starting with telling about the concept you have in the vaguest most generalized terms you can think of, and then becoming more specific as you go. Personally I don't think you'd have a lot of luck with that for the reasons I mentioned in the paragraph above though. So maybe you should get an associates degree in programming or something and then try to get a job in the industry.
"Whenever cannibals are starving, Heaven, in its infinite
wisdom, sends them a fat missionary"
-Oscar Wilde
"Perhaps it's impossible to wear an identity without becoming what you pretend to be."
-Page 231, Ender's Game