The problem with the Star Wars analogies, is that SW was primarily 2 factions. The empire(dark side) vs the Rebels(light side). L5R is 9 factions. Which is why having the primary antagonist as a playable faction works for SW but didnt for spider. In the 8 vs 1 scenario, either the antagonist is heavily featured a which is unfair to 8/9 of the player base, or they receive equal time and cease to be a credible threat. It's a lose lose scenario.
I think this is a really good point, and deserves to be called out. the game badly needs a solution to this problem. i mean, granted, AEG never solved it and they kept the game going for 20 years, so its not what i'd call an imminent threat to the games survival, but i think that it would make the game overall better.
i say this as a spider player too. its not like we're not aware of the problems that the current arrangement causes, because it causes us grief too. we have lost SO MUCH the last few years, because every story is us vs rokugan, and we can't possibly win even half of them. especially not when we've been as terrible as we've been. Thats honestly why i was kind of looking forward to onyx: i was hoping that it would remove us, in a weird way. the clans would be playing for various survival prizes, trying to setup their eventual victory in the next edition, and when that came along the spider or whatever we were then would probably have not been the same. i dunno. i don't honestly know what the solution is.
I don't think there is a solution. I said it a few times before on AEG boards, but wanting to be the Evil Antagonist, while still being a Clan is a "have pie and eat it" desire. The Shadowlands situation works because they are the Evil Antagonists but they are also clearly painted as an outside force, a power that can keep 8 clans in check.... but at the same time, so alien and corrupted by that power that no one in their right mind would invite one of them for dinner.
The "Walk the Light" Spider could work, even if they'd still be fighting for the same "spot" as the Scorpion and would (in-game) have a tremendously difficult time after Kanpeki... but it would still be a risky gamble, IMHO.