This leaves out Human, Dwarf, and Tauren paladins.
The only tabard that even bares a resemblance to the icon of the silver hand is the Tabard of the Lightbringer, which in order to get we have to finish the Shadowmourne questline.....
So basically, can we get tabards baring the insignia of the silver hand and Sunwalkers that are available to Human, Dwarf, and Tauren paladins (without having to go through a legendary questline from and older expansion)?
This can easily be done by tacking on a Tabard to the paladin lvl 50 class quests for Tauren and Alliance paladins. Hell, at this point i wouldnt mind it if the tabards were available via a quest for the whole faction (Sunwalker tabard for the Horde, Silver Hand tabard for the Alliance)