Using magnets to connect more clubs into one structure definitely makes for a potential of high numbers of objects in use at one time. It seems that using magnetic props is kinda difficult though. To begin with, connecting clubs isn't exactly super trivial in a pattern with just 4 objects, furthermore, the "standard" magnet strength doesn't allow for a huge range of motion or movement before connected shapes break apart again, e.g. you have to either keep them in pseudo balance, have them hanging straight down, hanging on by using centrifugal force, or support both connected clubs in the structure using other body parts, another prop or your environment etc.
I think it requires a very brave and dedicated juggler to specialize in something new like this in order to realize its potential. One of the first patterns I came up with was the 33 that I do in Modified clubs, my goal was to learn  and hopefully connect into that from regular multiplex , but it's just felt impossible!
If we stray from how my original clubs were built, I can see a lot of ways to make handling high numbers of clubs possible, such as using super strong magnets, so that they pretty much act like a staff when connected, changing the magnets place into the body so that clubs can connect in other ways than top-top top-handle handle-handle and also using the environment or attaching clubs to your own body makes using many of these clubs more manageable, but that further raises the potential.
Not sure if this answers your question.