I don't understand the problem with more options. Previously, we had two options - on or off. Now, if we want, we can adjust each faction's intensity from weak to stupid overpowered.
If 9 wrecks you, then the existence of 10 doesn't affect your gameplay. So why take it out? Someone somewhere is probably trying it just for fun to see what it looks like.
I think the issue is
"I've always felt the max difficulty should maybe, somehow, possibly, be beatable with an insane amount of cheese or luck."
I much prefer the development philosophy of "here's a number you can tweak - go nuts, but 10 will probably kill you"
to
"Well, we'd like to add a sliding scale for hybrid difficulty, but we won't implement it into the game
until we have carefully playtested it to make sure that the highest number we pick is both a challenge to anyone but also actually beatable if someone uses a certain skill set, and certain other options which affect it, etc...".
I don't think we'd have minor faction options at all with the latter, but you should not feel bad that you can't beat 10/10 with 10 Golems, 10 FS, 10 Hybrids, etc....