Ok, I think llama, being an expert, suggested the best idea.
To save the usefulness of amphibiousness on units and pretenders somehow (Wyrm anyone?), and at the same time not disadvantage the land nations, the sea provinces will have a just nominal income and mere 2000 pop.
They will have the normal gems though, so the map's special locations and the need of some nations for W gems are't killed.
I hope everybody gets happy with that. After all if a nations is focusing too much on sea, is probably giving you the side on his land provinces
