We're enstating a rule of thumb here for this team.
When creating a suggestion for the team to work on, put "Suggestion:" as the first word in the topic. This way we will be able to pick through them more easily. We will go through and add "Suggestion:" when we have time, to those who dont have it, or forget to put it in the title in the future.
Also, when creating suggestions, make sure it is good and thought through. Make sure its something that really strikes you as worth doing. We dont want a lot of suggestions that people just kind of make to try to get more out there. Try to ellucidate on the concept as much as you can, and provide any possible links and commentary and things that may be useful.