So this is like 10-15% serious:
The map on the KT armor set has really weird "rivers". Specifically, these two cross shaped bodies of water that are right next to each other. It also has a bunch of small lakes with odd placement (really close to the coast) and several distinct areas that are the same color as the aforementioned rivers and lakes (I suppose these could also be mountains, but they're kinda weirdly placed for that, mostly coastal and isolated peaks, and not a range in the center like you'd expect). So out of curiosity if anything could be gleaned by outlining all of it to make it more distinct I did so for the clearer of the lightened areas.
Also note that the southern, more separate landmass with the X is much lighter in color along most of the landmass--like the rivers in the rest of the map, which is also strange.
So after outlining it, I realized that (and here, I'll again point out
this is not some super serious claim) the map can be read as underground, resolving a lot of the weirdness of these bodies of water and splotches and explaining why the southern island is such a light color in comparison.
And then it occurred to me that it's pretty silly for anyone from Kul Tiras to attach a map of Kul Tiras to their armor. Are they getting lost on the island they were born and have always lived on, and thus need a reminder handy? Do they want other people they meet to know exactly what the place they come from looks like on a map? It seems pretty silly to wear a map as a badge, even in our modern society where maps are so readily available and people know geography much more than the average person in fantasy times did... it would be strange to wear a map of your home country as identification of who you're with. Wouldn't it pretty much have to be a map of some more unfamiliar region that they have sewn into their armor to keep a hold of that information, either literally or metaphorically?
The second map appears to be a much smaller island with a spot located in the nearby water that is accessed or has access to someplace off the map, and there are similar markings that connect the southern island to the main landmass--which is odd because you shouldn't need to start someplace else to find the treasure there, just get an indication of the path once there. So you could actually read this like the boat markers we get on ships and zeps currently (i.e. there is a spot on the southern island, and a spot on the second map's island [KT?] that travel you to the main landmass.
Again, mostly nonsense, but just some interesting things.