It exports color specular and emmisive maps, but occlusion maps would be awesome. (with and option for what detailed of occlusion bake you want)
texturing tileable sculpts well is not really possible outside of 3d coat because it doesn't bake the occlusion for the sculpt.
while it is possible to bake the occlusion seperately onto a retopo plane, it is really fiddly to allign it with the normal and depth amp from "export depth along y"