Streamlining joint plans

Currently finding the joint plans feature requires a lot of extra asministrative work to ensure the records are up to date. For example when updating any information in the individual clients it does not pull through to the individuals. Would it be possible to instead just have a toogle button on an individual accout that allows them to be joint to another individual. Instead of having to create a whole new joint account and then individual accounts. We could then have premissions as to which accounts they can see on each others dashboard. ie can only see their own plans and those marked as 'joint' owner.