I have a Ford Explorer with Adaptive cruise and all the other safety features. It is the best feature of all. Doesn't require thinking at all. I think it would be great in a tow vehicle. It's simple, if you are driving faster than the vehicle in front of you, it gradually slows down to the same speed. You can set the following distance, so with a trailer, you would set it far back. If someone cuts between you and the person you are following, it will slow to get that following distance in check. If someone slows or hits the brakes, it will do the same. Usually faster than I can think about it. When I drive my truck and trailer, I don't have this feature. I have to think about it, shut off cruise, etc. I think it is a great feature and should be in all new vehicles.
I haven't looked at the latest HD trucks. Do any offer Adaptive Cruise? I looked at 1/2 tons and Ford was the only one offering it. The GM guy told me that GM didn't think Adaptive cruise was safe when towing, which I disagree. But I'm sure that is just because they didn't have it. I'm, not sure about the 2021 trucks coming out. If given a choice, I would pay extra for it in any vehicle.