Discussions of this kind please me always and it's also a pleasure to debate the very sources underlying the matter we focus on, delving and digging deeper in the old lore; I love it. On the present structure, I'm well glad to participate in the topic, but I'm afraid my stance on the proposal will have to be negative this time. I've already expressed myself in this
post of mine and I reaffirm my thesis here too: as far as it pertains to the game itself (our defined context), I think it would be counter-intuitive and conceptually wrong if the Lord of Gifts were given that fair appearance, which is perhaps too fair for the case. Being Mordor the quintessential representation of the Evil in the Edain Mod, it is important that its leader (the tyrant) be characterised by some details that signal his real malicious nature. Clearly, his evil intentions are well embodied by his own abilities (it would thus be nice if his physical appearance matched his wicked mind).
Furthermore, the aforementioned reasonings reflect my personal opinion on the lore as well. It all revolves around the definition that Tolkien often gives to that atypical example of beauty: fairness that emanates might and provokes authoritative awe or dread in the people witnessing such types of uncanny events. I think that a comparison could be drawn with the Dark Queen; Galadriel says that she would be fair as nothing else in the world, but also terrible as the rising of the dawn or as raging storms. Tolkien writes that, while the One Ring causes her inner ambition to come forth, she does emerge as an unspeakable fair figure, yet dreadful and affected by that ill-natured power. The reference to natural phenomena is simply perfect, because this is nothing else but the canonical definition of a sublime manifestation (immensely beautiful and equally terrible), which both art and literature connect most of the times with nature. Tolkien follows therefore in such literary legacy about the sublime theme.
Now, this is what the passage that was presented here reminds me of. Sauron is exactly described as a commanding figure; one with a noble composure that stirs reverence within anyone beholding him. Nevertheless, it is quite far from a completely saint-like characterisation, which is instead used for the Maiar of Aman or even the Powers themselves, being terrible yet holy. And there is very little holiness in Sauron, even though he's disguising himself to trick others into believing he's a real angel who was sent as a divine emissary at the behest of Valinor. So, I'm not saying that he wasn't fair or bright, but there is that subtle trait of his which the current model shows well; his cunning and ambiguous ends, surrounded by an aura of clout and sheer power. This is what I read into Tolkien's own words, and we should also not forget that not all Elves were ensnared by his manners, for some saw through him and discovered that his heart was not pure nor pious. Additionally, I believe that the Elven smiths had been conquered more by his vast knowledge of the secret of metallurgy, rather than his fair appearance.
In conclusion, despite appreciating Necro's work, I would personally stick to the cinematographic adaptation, as it gets closer to the portrait of the Lord of Gifts that was depicted above. I will also provide other visual examples of that awe/authoritative presence/fearful reverence I was talking about.