In my experience the issue tracking / feature request system that you use as part of your product management strategy will quickly become bloated with lots of ideas from different constituents (employees, partners, customers, media, analysts, etc). It is important to be very opinionated with your product’s functionality and to fight hard to keep the application focused.
One of the things I recommend doing is similar to old saying that you should give away any clothes you haven’t worn for a year: you should delete any request older than six months that hasn’t come up again in the past six months. This strategy helps clear out items that kept getting re-prioritized lower. The act of letting the requests sit there and fester creates noise — delete them now.