Nope, not an April fool... I have actually done something! ;)
Ok, Surface vehicle basic waypoints mostly working again. Walrus now seems to skid like mad on land for some reason now - still investigating... probably that damping issue again :(
Hacked in manual Walrus docking too for now - just drive up the Carrier rear entry and you'll get docked when inside. oo-er.
Manta autopilot somewhat serviceable again... lots more work needed there though.