This is a good question, but might be hard to make promises with Valve constantly making changes to the fair value policy and key limits with NSFW games. Not to mention the game still needs to go through prohibited content validation before it is even available for purchase on Steam.
But none the less it would be good to know the intent at least from Dr.Muramasa, is this part of the plan or is Starmaker purely viewed as a free project and not subject to Patrion benefits such as steam keys?