Ye it's telling for sure.
Personally I don't see much resemblance with the Vrykul, besides that they are a offspring, a separate group of humans who went it's own way. So it's hard to picture them with the vrykul style or model. The Vrykul are still the progenitors after all.
I only see thin humans or regular human model, which are slightly larger, with maybe a different idle animation and maybe (like you suggested) holy tattoos. Both options don't really do much, besides giving human model to Horde, alliance would then get another one they already have ( if it's the same as Earthen) idk how exciting that will be. I am not happy with Earthen Choice either. I am not sure why horde would care for the dwarf model and it showed in the comments as well. Maybe a handful here likes the choice. Officials are a different story as usual.