Currently the Vintner Guard Armor, despite being very clearly Iron-Tier, is nearly as weak as bronze armor.
So this suggestion is simple:
change the armor of the Vintner Guard to Iron Tier(Similar to Gondorian Armor). This makes sense due to their price and their contact with Gondor, which should allow them to get good enough armor. Even better would be to make a separate "Vintner Guard" which would have the current stats, they will have a new armor though, maybe with the same recipe as the Rhunic armor. It will be slightly leather-based and this will kinda be the "Levyman". They will guard the vineyards.
Meanwhile, the current ones(buffed) would be renamed "Vintner Soldiers" and do all their current functions except for guard vineyards.
Constructive Criticism is appreciated,
Thank You!