I've been wondering if its possible to include a section within the final dialog when a mission is completed, that allows the user to select "CREDITS" and see a list of supporters. For instance, I'm collaborating on a project with another writer and I'd like to be able to show these listed in the mission. In the past, Filbones has also reviewed a mission and due to subsquent amends, made the mission better so it would be good to also credit his suggestions in this dialog.
I have read the EULA and as long as you are not displaying URLs or company information within the mission, it seems that this is ok.
So the question is, would it be appropriate to see a CREDITS button on the final dialog pop-up before you complete the mission where the player has the option of seeing who contributed.
I think I'd try doing it in a way that doesn't require the player to go through the credits and not as a dialog but rather as Location Marker notifications.
I would try as you say, to avoid something that forced the user to view this but was giving them the option (as you do within other games for instance). This is a good option and one other idea was to have an NPC in the final Map you could chat to, but had no defined mission objectives in order to finish the mission itself.