I’ve noticed that the user might unintentionally alter all the paragraphs in each paragraph just by using CMND+I on a parent element.
Not sure if that’s intended, but to me, it’s a huge flaw knowing that reversing changes is quite destructive if you have deliberately overwritten the instance. This may eventually lead to very mundane manual work, which is why I’d recommend restraining switching font style of sub-elements when a parent (frame, section) is selected.