Matey already made a poll to do this for all light armors which is fine with me, but I specifically think the Robe needs to have greater benefits than what it currently has has. The Robe, being a rather bulky item of clothing has more room for improvement than some other clothes. Additional hardened leather or metal plates could easily be fit within the thick sleeves of the robe. By the time the robe is reinforced(3rd heirloom) it should be significantly stronger than a plain robe. As it is now, heirlooming my gauntlets actually provides more benefit to total armor than heirlooming the robe itself.
Current Robe Stats: 1st heirloom= +1leg, +1body; 2nd heirloom= +1leg, +1body; 3rd heirloom= +2leg,+2body
Proposed Stats: 1st heirloom= +2leg, +2body; 2nd heirloom= +2leg, +2body; 3rd heirloom= +3leg,+3body
Note: This poll does not address the issue of whether or not any looms should have weight penalties that come with their armor upgrades.