Absolutely love them. They feel so much like High Rock. I love the way they look, and the way they dance to the pipes.
Who was responsible for these guys? You got it absolutely spot on.
Glemyos is now one of my favourite world bosses ever, but I have to admit, I can't bring myself to kill him, because he's just so majestic, and is only protecting nature, after all!
They feel so much like they belong in the Breton story that their absence in base-game High Rock seems like a mistake of history only. They feel like they belong in the woodland groves of the Iliac bay.
Please consider finding a way of retconning them back into High Rock proper one day!