What I have been really happy about the old KSP, and unhappy with some other of my favorite games, is that you don't need to pay for a DLC to get more great content. I don't mind paying for a DLC that adds to the game (like Making History or Breaking Ground), but it annoys me when games force you to buy new features or a constant flow of new but useless DLCs. I was really happy with the way the the original KSP expansions and updates were done, so please do the same with KSP 2.