Low points can be added, just depends what you are looking at doing, and how good the original cue is. Short v bottom points would have to be deep knife cut in aka black boar, as I cue maker, I would be afraid of hitting a steel weight bolt in the forearm. Cnc/flat bottom points would be realatively easy to do, just depends on your "A" joint ring work. I see no reason why the diameter of the cue would change. If your outside veneer is black, you could even make the short points look like they were cut in first and the long points cut over top, that is if you use a black short point. Again, it all depends on your existing cue and design. Cost wise it all depends on the design, but besides the structural work, you are on the hook for atleast a refinish and probably a rewrap. Hope this helps