The issue with having every-one available to every-one is the inability to hide yourself from people / tribes you're not interested in. A feature to hide you from the grids of certain people will help with that.

So, if I wanted to be hidden from age ranges etc. I know that I can filter my own grid to tailor my results, but it doesn't stop them contacting you. Annoying when you have nothing but 60 year olds shooting their shot constantly