I guess I know what you mean, just until I got this unit myself I was getting so frustrated with the Hercules (Ithaka clone by Rainbow) with it's resistance-non-resistance and so many parts that could come undone that I mentioned somewhere that I wished he would make an attachment for the bottom to become a 510 connector.
I would have used it with a Precise ELA I have coming soon but once I actually got this unit and got the kinks worked out of the button, I love it!!
I love the single-unit build of the base. Less parts = less things to go wrong IMO