If you think about it, it would be odd for the Uruks to have magical armour that made then faster than they are usually. They have Orc Draught for that, don't they? And it couldn't be enchanted by Saruman, because he would probably consider it beneath himself to enchant several sets of armour of his soldiers.

I'm not completely happy with the idea of Eldarin armour either, but I think Galvorn armour is too strange to be used by leaders of Rivendell and Lindon. The only person known to use it hated the Noldor. Why and how would they end up giving the armour to their leaders?

On the other hand, Elven Silver, while not mentioned in lore, could very well be something made by the Elves. It could be an alloy of iron, or it could even simply be modified silver.

Actually, I quite like the idea of using silver to make it. Perhaps it could simply be silver enchanted not to tarnish or grow dim, in imitation of Mithril, or to be as hard as iron. In this case, the Orcs would fear it because it would have Elvish enchantments on it. Perhaps this could be represented as a resilience to Orcish blades.

Edit:

Removed Uruk Scout Armour from the suggestion and changed recipe of Elven Silver.

I like the uruk scout armour. I would not think that it is enchanted but more that you are an uruk yourself. Wich would make no sense as well... But it works for the Uruks. Then we have orc drought.

I do not understand. How would wearing simple unenchanted light armour provide extra speed?

It makes them faster.

I meant, by what logic would armour make someone faster than they are without armour, unless magic is involved or the armour includes rollerskates?

I doesn't make sense. Also making Uruks faster would make them SO overpowered.

Wait, are you for, again, or indifferent to abandoning the idea of Uruk Scout Armour? I decided to abandon it and even removed it from the post.

Yes. It is a cool idea but it makes no sense. Let's look for something different.

Oh okay. I don't really think the Uruks need any special armour though. Their armour is already quite strong. Also, the Uruks are a relatively new faction. They haven't been around as long as the Dwarves or Elves or even Mordor Orcs, so it wouldn't be too odd that they don't really have their own special kind of elite armour or special powers. However, I think the Berserker Cleaver should do extra damage against horse (I think it was mentioned that the double-tipped swords of the Uruk-Hai were designed for gutting horses)

Edit:

It was mentioned in the Portrayal in Adaptions section, referring to the movies. Still, they've already added the berserkers and their swords, so it would be logical to make them do extra damage against horses.

I don't think any of the armor sets should be craftable, it kinda makes them pointless. They should instead be given as a reward for completing a quest (like once the quest is completed the quest giver has a 25% chance to give you one piece of their factions elite armor). Also why does the dwarven forge armor provide less protection than regular dwarven armor? I think all elite armor should provide either more protection or more durability than the factions strongest armor (protection should cap at 17).