I haven't gave up just yet.
I think these guys have the right vibe, save for the oversized blades (and the would need braids):
Other option I'm pondering is Otherworld Gnolls (trimming nails, head swap and some weapon swap):
I like Otherworld's proportions better, but all of them com with fur cloaks and that doesn't scream "desert" to me. maybe if painted as lion fur or something...