Finally.
The question that so many has been asking since the thread was made is answered.
"Why remove them?"
This is the reasoning that I was looking for, not the math behind figuring out who's active or not. Props to Zelda for being able to word a question better than me.

I can feel that once you've now explained the actual reason on why you should be removing even the great clans, the need for untouchable ones stagnates.
However, Nuthug's post leaves me somewhere in the middle on the issue of whether it's joust in this case alone, though I have nothing left to say on that note.

I'd just like to end with some more thoughts on a possible solution.
Personally I have never heard of, or know anything about, for example [ToriGod], other than them being a clan at some point.
It might be a sound idea to consider a Legendary rank only for dead clans, meaning that no clan is untouchable and the goals you're trying to accomplish would still be met.
People would still have their "historical" clans to go check on, be it only once they're dead. From where I see it this is better and more realistic than what was presented earlier.