For my money adaptive high beams is the dessert while the CX-5's Adaptive Front Lighting System that turns the beams left or right with the steering wheel is the steak. That's assuming it works as well as advertised. It is not included in my Touring trim. You have to go to Grand Touring or higher for that feature.
Hard to say if adaptive high beams is cheaper to implement than the turning beams. If not, I wouldn't expect it to be standard equipment.
Personally, I'd gladly swap adaptive cruise or lane keeping or both for the turning beams.