In my opinion, the core idea of this project is random swaps, blind swaps, this is fine because reduces significantly transaction costs on swapping.
You dont have to check wishlists, simply send 100 stamps as nice as you can and that's all.
It is a powerful and simple idea.
Of course it is necessary to control that nobody sends poor quality, damaged stamps, less than 100....The rating system discussed in other mails goes in that direction.
But, returning to this point, if you don't want to be skipped, you won't narrow too much your profile.
If you want only what your profile says, then keep it, but assume that probably a lot of members will skip you.
Submarkets will appear inmediatly. One for the generallistic collectors, "hi, I accept anything, if possible send me stamps from france", and some speciallised market "no cto, no definitves, no pre 1990, I only collect turtles".
The wider your profile is, the wider your market is, and the possibilities to be accepted are higher, of course.
So, in this approach, profiles should been respected, as I don't particularly enjoy been rated low, simply because I don't have the stamp that the other collector asks for, although the stamps sent are ordinary (more than 100, no damages, no extremely common definitves.....)