You are assuming 1) it isbelow gyrocopters and 2) it hasn't been looked at.
For 1, you have no way to know what priority it has. Are you basing it on his work on the gyro? From what I remember him posting, the gyro was something he did in an afternoon as a proof of concept of how easy vehicles are now with the changes in A17.
For 2nd one, where did you get that information? Do you have access to all the Devs daily schedules? Just because Fataal has just now been handed the task, that doesn't mean it hasn't been worked on at all. It doesn't even imply it.