Personally I don't see anything wrong with the way it is. If you aren't interested in the vehicle section then you don't have to select it and the opposite goes for people who only want vehicles. I don't think there is anything wrong with one stop shopping, I collect both planes and vehicles so I really don't have to look elsewhere but I do check them all out to keep up on Hobby Master matters.
http://www.hobbymastercollector.com/
Please fix my signature so it attaches itself to my posts.