With my main and jib halyards the wire part ends with a nicopress loop. I secure the line with a buntline hitch. Going to Stay Set X after I step the mast and see what I have for sheaves.
Pay particular attention to the stiffness of StaSetX. I've gotten to the point where I won't use it for any application because it is so ornery.
To replace almost any halyard, I would make a composite halyard using Dyneema or Vectran for the shackle end covered with a polyester cover at the hauling end. Analogous to wire with rope tail.