I'd gladlly contribute time and money to the cause, because it is my hobby, but after reading the transcript of Sid's presentation in San Francisco, I realized that I'm a bad beta-tester candidate.
I accepted , if not like liked all that bad-luck stuff in the game, as long as it was balanced in the long term. You know, riots and revolutions, floods in the original Civ, volcanoes in III, random events in IV, Plague in the scenarios. Unpredictable realism adds excitement for me . It may set me back, but it may happen to Shaka, too. I'm over 50, I've watched the world change, I've read history, I've played sports, I've had my own business, I've learned that you cannot expect or control everything, that being prepared for an emergency and being able to adapt matters in the long run.
Apparently, the typical player doesn't see it that way.
It's best as it is. I make suggestions and debate proposals on these forums, firaxis reads them, tries them ( Phalanx UU as an axeman with a march promotion), changes them into something better balanced. It sounds like they'll introduce some of my most requested changes in Civ V ( hexes, a better map making tool , navigable rivers, ranged bombardment, doing away with SODs, etc. ) and others who better represent the market will play-test them and give feedback.