It would be really useful when prepping for meetings like leadership meetings etc to be able to create a Portfolio for each and be able to make some high level notes as status updates so you can read though rather than have to do seperate meeting prep/notes. Might be something like "Delayed due to client hiring new marketing manager"; "On track, but risk that key stakeholder will change their mind" and so on.
Would also be useful to have the ability to add Projects as well as Lists.