It would also be interesting to have some scenarios forcing you to have some kind of range. As a scenario condition, I mean, I don't want us to sail for three actual days.
Because right now, setting the range slider to the minimum is pretty much the first step of any build.
In a future update, being able to design all the ships in our fleet, at least for some scenarios, would also be more engaging. I'm not a big fan of playing autodesigned ships.