Opening them, for starters. The credit associations can cause complexities. I just think it’s old fashioned, and in the modern day we’d be better served by something else that’s much less rigid.
I imagine so, through removing members of the shared space. It’s a new risk, though not entirely, joint accounts are open to the same sort of financial abuse too, and so the same care should be taken when deciding to use them. They’re for people who trust one another implicitly.
For those who like the joint account model, what exactly is the drawback you’re envisioning here that doesn’t exist with joint accounts?