I don't think you're being naïve. I do think it's important to make it clear to potential clients that design work, even at the preliminary phase, has value and is protected by copyright.
In most jurisdictions, clients are buying the right to build once from a set of plans. Shopping preliminary plan sets around whether they have your name on them or not really just doesn't smell quite right.
At this point we can only hope that your colleagues have a sufficiently mature moral sense to pick up the phone and give you a call.
I think I know Guild members well enough to be able to predict that nearly all of them would do that without a second thought.
Comments?
