First off, a weekly build is asking a lot. So much in fact, that it would hinder development. If every week the development team was just trying to produce another working demo, no features would be completed. I worked on a program in college over an entire semester to control a model train set. We spent 130+ hours per team member on the project, and didn't have a working demo until 3 weeks before the end of the semester. If we were required to have a working demo within a week, we would've never been able to work out other features (stopping collisions, allowing the train to reverse, change switches, sound a horn, etc.)
Most builds of the current game status would be unplayable. You wouldn't be able to do much other than look over the code.
As for requesting changes, you would have to invest much more than just the price of the final game before you could be taken seriously. If it were me, I would listen to the guy who paid me $1,000 rather than the person who paid $50 and expects a free copy of the game when it's completed.
I think it's clear at this point that the earth wasn't made in a week, and religious fundamentalists are trouble.
Just like the earth isn't round and the sun isn't the center of the solar system, right?
Certain ideas may seem ridiculous, until you take the time to really look at them objectively.
One man's constant is another man's variable. -- A.J. Perlis