Exactly. One of the reasons we haven't yet added something better is that there is a lot of game-balancing that goes with it.
Could you add 1 more sea route for each of the cities on the inner sea of Dwilight? I think that would spice things up a bit since everything is so far away on Dwilight already.
Eidulb
Libidizedd
Mimer
Golden Farrow
Port Nebel
Port Raviel
Paisly
Madina
Fissoa
Adding 1 more sea route for each of those cities would hopefully not be all that difficult coding wise. It would add to the realism of Dwilight and it would probably promote more fighting since it would be easier for realms to travel. If Fissoa could travel to one of the D'haran islands it would be a much more interesting political arena for D'hara and Fissoa.