Once you create a persona it should let you assign it to different products (even products in different product lines). With the current capability, if you create a persona at a product line level, ALL child products inherit this persona. In many cases, we use persona more as a stackholder concept and is quite painful if you need to create a new persona for every product. Basically, 1 persona can belong to 1 or more products (and 1 product can have 1 or more personas). Thanks!
Thank you for the idea. Given the low volume of support for this idea, we do not have plans to make updates in this area at this time. It is currently possible to copy a persona into other workspaces. We hope that helps!