I have this awesome request for a new feature in Unity. I have reported it through the Bug Reporter tool that comes with Unity, but I haven't heard anything yet.
You can get an easy overview of which requests already exist and it is also the easiest way to see how popular certain feature requests are by voting on already requested features.
You can vote for multiple features, using a max. of 3 out of your total of 10 votes. So all in all it provides a collection of what the community wants and is the ideal place to start looking when you have an awesome idea for a new feature for Unity. Somebody might have thought of that feature before, so you can vote for it.
You will not get this kind of overview when using an email or the bug reporter and it makes it hard for UT to find out how popular a certain feature is. So feedback.unity3d.com is the method of choice.