mapping tips by biass ahead:
@morax
Yeah but you have minimal space between islands and insufferable amounts of mexes on the beaches, frigates might stop it yeah but just doing relentless frigspam (roanoke kappa) is never that fun and doesn't stop hover on maps like high noon..
try to avoid super far off islands in each corners, they're never fun, just annoying to reach and then to react to if something happens, like the strange islands on the edges of mesmerising paradise, having a background of water is not a "waste of space" just an aesthetic choice or a compromise to for a map too big for 10km
for spawns, you're saying that you cannot enter the water immediately next to spawn but navy can shoot you/hover arty can shell you? players will hate that typically
be careful with how you place mountains in the way of what is essentially a transport route, as we all know heightmap messes with how you drop bombs, units or otherwise, im sure better players might micro around that but new players wont, gotta throw them into the consideration somewhere
else, good luck with your ideation