We aren't going to come to an agreement on this ... A set of armor is all dandy I've said a million times that I simply think the value of the armor is not worth the effort of creating it. At the moment there are only a handful people in the world that can make cuendillar and the process has proven to take a lot of time for all but the very best. Perhaps this will change at some point, but judging from the relatively small number of cuendillar objects that existed from the AoL it seems likely that the Talent is rare. Given that they clearly did not make armor of cuendillar during the War of Power when they had much deeper resources it seems logical that if there was benefit to it they would have done it.

As for weapons, arrows would be very useful and advanced forging methods for blades already seem to exist in the WOT universe based on the swords we've seen ... which can ensure a cuendillar sword is as sharp as necessary and since it will never lose that edge there is not need to sharpen it again. I still think it's a waste of effort to create any of these things when the nature of the world is already beginning to change and the OP is being used regularly in battle and war machines are becoming common place and the days of the individual swordsman are coming to a close. Long range weapons will only get more sophisticated thanks to Rands universities.

Also we have zero indication that cuendillar is lighter than the iron it starts out as so your supposition that the armor would be light weight is not certain by any means.