My plan was always to have a brainstorm site for non-specific ideas like "Multiboot", "Add a recovery mode" or "Implement browser tabs" where we can work out the reasonability of the suggestion, then discuss the specifics of the actual implementation once it's decided that it's valid. Once a plan is put together, the specific steps will be moved to bugzilla in the form of enhancement requests.

It's not an either/or proposition, but a clear and straightforward feature development process from one step to the next.