I think I must be in the minority, but I don't mind the HT Endor sculpt at all. The gritted teeth sort of show some sort of effort/exertion swinging the saber. I'd prefer that than the "stare straight ahead at nothing" Luke SS sculpt
When it's tilted down and looking straight at you it looks better (some of the teeth are obscured) - you get the determined vibe. Looking up slightly you get more of the Busey rows of teeth look.