Between my strong writing talent and my game design savvy, I'm the man for this job.
I know how to communicate effectively. I know how to be clear and precise. I have a solid grasp of what a game needs at the conceptual level, and I also understand what a game needs at the technical level. I can present all this information in a manner that is straightforward and unambiguous.
As for concepts, I can spawn new ideas like nobody's business. Better yet, I can judge their potential, cull the weak ones, and only present those strong enough to stand on their own - those that are interesting, but not needlessly complex or overambitious. Those that don't just sound cool, but might actually be fun to play in practice.
Feel free to contact me to discuss things further.