It does work absolutely fine as soon as you start moving. There’s no reason to disable HT on foot besides the lackluster behaviour while standing.
All it needs is a restriction of head movement with mouse while HT is active. Or just turn the upper body with mouse input.
That’s practically what I said before when I spoke about the hip movement. We could try to hard coupling the aim and base rotation vectors if head tracking is on. I’ll check with the actor team on this but I honestly don’t know if that’s easily possible or even desired. It could lead to some odd looking stationary rotation movement so I’ll see what they’ll say.