Hello, PieceOfMind. With apologies, I am failing to quite grasp what it is you are saying here. Is your concern that the copy protection system will hamper modders' ability to create user generated content? Or is it that modders who use DLC material will find fewer users to share his mod with? If your concern is the latter, then I don't think you should be worrying. A modder who intentionally uses DLC material does so knowing that only a few can play his game. This situation is a bit akin to modmods. You can make Fall Further, but if few people have Fall From Heaven II, then few people will be able to try your mod. The principle is different, but similar. A modder who uses DLC need only state that such and such DLC is required to play his mod. He is completely aware that not everyone will be able to use his mod.