I think I figured out why the vehicle movement rules irk me. They're based on the character-scale movement, but are subtly different, and I found the difference.
In character-scale movement, it's talked about in relation to your current range to someone/something and your new/desired range. One "maneuver allows a character to move between short and medium range relative to another person or object." So two maneuvers allows for movement between medium/long range.
But if you read the vehicle movement rules, it is all talked about in relation to close range. Speed 5-6 says one maneuver to move within close range, or move between close/medium, and two maneuvers to move between close/long. What if I'm at medium range and want to go to long? Or what if I'm at short and want to go to medium? Starship movement revolves around starting or ending at close range!
Speed 2-4 is a good base-line, since all craft I've seen has at least a speed of 2, except for the VSD and AT-AT walker.
So 1 maneuver to move within close. That's easy, and maps perfectly to character-scale movement. One maneuver to go between close/short—again, just like personal movement. Two maneuvers to move between close/medium. That breaks down to one maneuver to go from close to short, and one to go from short to medium. Exactly the same as character movement.
For character-scale movement, it's 2 maneuvers to go between medium/long, and between long/extreme, so it should map perfectly for vehicular movement, but it's not listed as an option. Changing speed to 1 increases the number of maneuvers it costs to move, 2 to move between close/short. That could mean something as simple as it costs 1 more maneuver to change range bands. Invert that, and ships moving at speed 5-6 should reduce the number of maneuvers by 1, so going really fast only benefits you if moving to or from long range—medium to long, long to medium, long to extreme, or extreme to long.
However, that idea falls through, because it's only 2 maneuvers to go from close to long at speeds 5-6, not three like my extrapolation suggests.
That is where I'm getting rubbed the wrong way.