The dev team has a TODO item regarding an island-specific distance scaling factor open already (more things than mercenary distance are involved). But it's low priority. Not because it's not important, but because there are many things that are more important.
Scaling for distance is already in place for these calculations. Are you talking about additional factors other than ensuring distance is consistent across all islands the same as travel distance?
In this case, it *is* actually 1200 miles. The request would be asking to decrease the effect of distance penalties across all islands for such large distances.
