If they work in real use, I'm for this kind of thing, but I usually wonder with 'new' products. What will it do for me? Then I think about what it will cost. For instance - if I had a guitar with a totally stable removable neck. How many times would it actually be removed? Like my mics with swappable capsules. In the box there are omni and hypercardioid capsules that have never ever been fitted. I used to have video cameras with back ends that could be removed and replaced with different ones. I never did. Arri brought out a 1st generation LED studio light where you could removed the LED engine and replace it when a better one became available. I wonder how many people ever did?
Taking the neck off, after removing all the strings in one is amazing technology - but would I actually ever do this? My guitars hang on the walls, or lean up in corners. My 12 string has got the 1980 strings still on it?