Ian,
You know that I respect you, I've mentioned this before, so please don't take this the wrong way as I believe it is an American idiom, but you are the one who seems to be the squeaky wheel here, I do see if you other people from Europe saying they'd like an exchange, but you seem to be the one who is the most stern about the prospect, and are the one carrying the weight of the idea that most Europeans would prefer their own.
I could be wrong, but I don't see a bunch of Americans claiming that they only want to have an American exchange, and wouldn't you think from your perspective, if you heard us say well we only want an American exchange no outsiders allowed that could somehow be perceived as elitist or inclusive, and sort of hurt peoples feelings? The idea behind this forum is that is international, all inclusive of film, so why should we segregate all of these different exchanges, when we can do the same thing with everyone, are the images that exist in Europe so much better that you wouldn't want something that came from America? Ultimately what is the real difference between an American photographer shooting film any European photographer shooting film?
I guess the ultimate question is why? Why do you need there to be something separate, what is the real reason that you want only Europeans to send and receive photos, what is the need to have separate exchanges?