This gives an idea of the scale I'm operating on (note Beleriand is actually 12x15 - I'm basing it all on
this map):
I have already got a rough
edit file (considerable detail and smoothing is needed) which maps it all at the region grid level.
The main challenges with this are giving the player a sense of what's going on, and managing travel. I have some plans; we'll see how they work.