I would really like to see an FE Map, too.
I have seen two flat maps on an another forum. Unfortunately, the two were not alike each other and still they were provided by the very same persion (or a group of persons, that is, the admins of that forum) so I'm not quite aware how it is. Obviously, it is quite hard to even start arguing when you don't even know against what you are arguing.
The clearest difference is in the size and shape of Australia. In both maps, the meridians are straight lines radiating from the north pole with equal angles between them, and the latitudes are perfect equidistant circles with a common centre point (that is, the north pole). It is possible to transform globe coordinates to flat earth coordinates like one to one (and that's how it is done on one map), but when doing so, Australia looks squashed (when compared to globe maps).
On the other map, Australia looks just like it looks on a globe. This however means that its coordinates are not the same: it reaches over less meridians or more latitudes. (Or both, I don't remember exactly.)
I assume that the flat community has a certain system to define meridians and latitudes (otherwise they wouldn't use them in the first place), and maybe that system could be applied to the extreme points of Australia to determine its coordinates. Also, Australia has a network of public roads going through it west to east as well as south to north, so there should be a way to determine, which map is correct (or at least less wrong).