I expect we'll start to see a number of suggestion threads in the forums soon. I've always thought that community suggestions are awesome and that it's a great tool for devs to see what features their players are looking for. Kind of like a community brainstorm. I imagine the FTL community will grow, especially once the beta goes live and suggestions for mechanics and features will probably start to flood in. It probably will warrant having a child forum.
Inside that forum, a sticky thread defining the scope of what will be in the game, would make it easy to label ideas. Here are some quick examples:

So as a scenario:
ForumUser: I think we should have a planet where we can land the ship and start our own space colony.
Limiate: Sorry ForumUser, per the FTL blog post, indicating that the game is focused on ship activities located here X, this idea is not currently feasible.

This may seem silly now but this game (in my opinion) is going to be a HUGE hit and the community is going to explode. Getting processes like this set up, so that the FTL team can come in and browse ideas easily, will make the great ideas that the community is behind, bubble to the top more easily.