Cultures and technology change over time in any culture, the Nolorian one least of all. However unlike many of our cultures today, the High elves seem to be regressing. Very few of the craftsmen of old remain in middle earth who's skills were taught to them by the Valar themselves, however that is not to say it is completely lost.
There recently have been many good suggestions about Lindon, however this suggestion has a quite smaller range of focus. This suggestion is only about Armour and steel.
Once in the days of old the High elves fashioned Silvery metal stronger than any steel. This high Elven steel would be made by smelting silver ingots with iron ingots.
Only craft able on a high Elven table Noldorian Armor would be stronger than the regular High Elven Armour and quite possible much more ornate, it would off course have a silvery texture, more so than the regular high Elven Armour. No high Elven Warriors would wear this Armour maybe an special mob if one is added, however the point of this Armour is to try to recreate some of the glory of the first and second age when the High Elves were at their height. THis Armour would by no way rival that of the gondolianian Armour.
These would have the same crafting recipes as all out her equipment but only with Noldorian Steel. Like the rest of the equipment set it would no way rival that of gondolin or mithril, but it would still be stronger than normal high elves steel and maybe not offer a stronger base attack damage, but would have improved endurance and maybe speed. It would also look dope. :P
Thanks for reading, I'm not sure weather this suggestion is a little bit o.p. But I think it would be a cool addition. Maybe their would be a way to balance out the armour, or possibles make it less o.p. I'm open to suggestions.