I personally see nothing wrong with non-members making suggestions, it is their way of contributing to the site and many suggestions have been to my liking, so as a member I benefit.

At this point 6 of my 7 games are against non-members, again as a member the ability to play both members and non-members benefits me.

Another thing we should consider before getting self-rightious is the fact that some people simply can not afford to join, what may seem like a little to some may be alot to others. The ability to play against them, exchange idea's on the boards with them and benefit from their suggestions are just a few important factors in my decision to become a member.

I agree there should be some benefits for members only as incentive to join, but idea's like boards for members only serves to rob me of the chance to exchange idea's and thoughts with members and non-members alike. As a member I want my thoughts and contributions to the threads accessable to the whole community, not just paying members.