Interesting! I knew Tolkien took much from ancients texts, like the elves, dwarves, etc, but I did not know that was also true for orcs. I've read the other posts in this topic, also the one from Singapore Joe which if I checked it well is from the beginning of the 1800s, long before Tolkien. Of course, they mean demons, not Tolkienesque orcs. Tolkien used a lot of things from all sorts of (old) stories and altered them, enriched them to fit in his stories. That's what I think TES should do too. Take some aspects from mythology and fantasy, fine, but make it unique and make it fit well into the world of TES too!
Um..right...well see, there's these games you may have heard of where they do exactly that...