not worried unduly about potholes or ruts and tyres have plenty of height for absorbing changes such as kerbs! ( under 4") just thought but looking at rear leaf springs for trucks and some cars I note they have extra 'leaf(s) ' clamped to ones bolted at each end to increase firmness after initial spring( leaf) has run out of deflection. So what if? another ARB was bolted alongside existing? using suitable 'U' bolts of course at several points .thus to my mind adding anti twist properties ? eg uprating ARB effects. just an off the wall idea and no doubt some engineer will point out deficiencies or whatever.