Well. duh.
A community will always give incremental features. This is the bazaar thing, where you can find everything, and is not a bad thing if the architecture support a bazaar (like a command line). When you are actually building a cathedral, you need a central entity that take all the input, and then proceed to do whatever he damn please.
PR as a role here, as you can tell people "we are taking all the input, studying it, and designing a system with the best ideas that make the more sense", actually reserving to you the role to design, not acting as a proxy for others.
http://theoatmeal.com/comics/design_hell
Bazaar is not always the solution.