Dennis, I also agree that the notched version would be more versatile, but I have another recommendation based on it. This comes from having used the meat hanger and trying to find a solution to be able to hang as many hooks as possible.
To render it even more versatile, I think it would be ideal to have the removable notched curved rod perpendicular to the current plane, as in going front to back rather than left to right. With two of those on either sides of the KK, and additional straight (ideally notched as well) rods to be positioned by the user to rest on the two curved ends would allow for one to pretty much hang whatever he/she needs wherever feels best.
This comes from me trying to come up with temporary solutions to hang my char siu and trying to get as much vertical space... I will try to draw this out when I find time. In the meantime, I will attach a photo of what I mean by trying to hang as many hooks as possible to maximize use of space.