Huge map memory

Hi!
It is indeed main drawback of the Honey, 10k hexes is more than on the biggest map in civilization 5, but I love to go higher, this is why I work on Honey 2 which uses different approach, which you can find similar to what is provided in Honey as "honey2 wip"

Also you could rework Honey to use smaller chunks and then detect when chunk is underwater and scale heavily down texture from it.
And the last solution could be any way to compress texture much stronger than what is offered within unity by default. Something like "crunch" could do a lot of good things, but each compression gears rist of artifacts on the texture borders.