Failsafe with a rover?

I"ve got a bathymetry boat where having a failsafe RTL to rally points would be really helpful. The problem is it’s a skid steer, so low throttle is 1500 lol.

Would it be possible in the future to have the airunit programmed for a sbus output in the case of a link loss? Kind of like the old Futaba receivers.

There is the failsafe for rover.
https://ardupilot.org/rover/docs/rover-failsafes.html

From my experience with the skid steer boat, low throttle will command full left turn. I would be nice if the herelink was treated like a GCS instead of a radio as the failsafe. I’ll try setting the radio fs on throttle lower and see if it stops spinning.