Stripping signatures (was Re: Remailers)

I think that signatures should be kept. If you really want to be anonymous, you have bigger things to worry about than your sig showing up or not. And if I want to build a pseudonymous identity for myself, I might want to have a sig for that identity. I wouldn't want the remailers stripping that out. Perhaps it would make sense to have a header field which indicated if the sig should be kept or not. Marc