Don't get me wrong, you may give feedback, but not before I finished the first stage, which also is the hardest. If I'm spending more time on checking the suggestions, I loose track of that first stage. Besides, It tends to happen to see people having suggestions that conflict with eachother technicalwise. Besides, I have a fair understanding of what people want already, and I have studied webdevelopment, so in order to create a good system, I need to lay down the basics and work from there. Having people post suggestions and not read them and then haveing alot of catch-up to do (and possibly miss one or two) is alot harder than just to ask everyone to wait a little, check the first demo, and give feedback from there.