It looks good. I quite like the Rhun sea and Nurnen sea areas. Nurnen looks a bit big but still looks good.
3d text could be interesting but probably more problematic than 2d text on top.
It could be interesting to have the text coming up from the ground, but not as the ground itself. Not sure if that sounds understandable.
Yes to Fringe text. If you did a tilted perspective view then the Fringe text would look pretty cool I think.