Well, I always felt the original campaign was simply an attempt to answer questions like "Demon vs Ravana, who would win?" etc.
Personally, I think situations where the Shivans are allied with HoL or Command or any other group
might work, but if they are non-hostile to the player, it would get complex, because the player needs motivation. I'm not saying it wouldn't work, and if done right it could be great fun, but it's not the easiest storyline to deal with unless there's a very specific antagonist, someone designing a weapon that can destroy Subspace itself or the like, and even then, the Shivans would still need those motivations explained from a human perspective.
Now, to make it clear, I'm certainly
not saying it wouldn't work, and I'm interested to see what you come up with, but I suppose my point is, I don't mind the name being similar, but try not to make the campaign into a Shivan battle-fest.
It might even be interesting to have the Shivans turn up and help you on occasion, and leave the player entirely in the dark for most of the campaign as to why, you could write some nasty stings in the tale using that technique, are we "doing it right" or are the Shivans simply helping us to hang ourselves?
