"How's that 3d math going for you?"
Me: "Yeah, it's fine... yeah... fine"
Tried extracting the player input so that the base locomotion and turn radius stuff is all shared. This involved changing everything from local to world space.
It's all mostly fine, save for the turret being funky.
Fixed up and re-smoothed out the movement.
Also we've got some new friends using the stubbed ai script that this venture was for.