@Stephanie_Shaw2 If I’m honest, I think the idea (as worded here) is quite terrible, and far from the “simple fix”.
Copying a portfolio with projects in it will lead to a LOT of errors. This is because you’re copying live data, instead of pulling it from a template, which should be the single source of truth for your new projects.
I think @Justine_D 's suggestion makes sense though. Doing it right would translate into a portfolio template, which is quite a different request from straight up copying a portfolio with the projects in it.