Frankly, I find the idea of a mapmaker who doesn't give credit offensive.
Jokes aside, I understand how you must feel about people essentialy stealing your work. Maybe you are taking a bit of a radical approach to this whole thing, but this is your decision to make. I mostly request the assets I use in my maps anyways. And as long as you keep us posted about the stuff you work on I don't even have anything to complain about. ^_^