Nebula issues are a separate thing from modules themselves, really.
Champions are the strongest case for modules, because they use so many of them, but champions themselves aren't of a ton of interest to me because I don't think having this single, very oddly behaving ship fits the overall theme of AI War that well. Personally, I'd cut it entirely for AIW2, and at that point the module discussion is limited to the other ships that can probably be handled more easily.