Urriak Uruk
Gaming is fun, and fun is for everyone
You were the one who brought up xenomorphs. I'm not saying orcs are just like clones or xenomorphs, just that in some ways they are similar.
Get rid of Gruumsh (or sever his ties somehow) and things might work differently even in my home campaign.
I was confused when you compared orcs to clones, as I don't think clones are evil (like, at all). Xenomorphs are IMO (though as @Charlaquin points out, they're more an immoral predatory force than anything sapient).