Easier (and more prominent) access is needed for the Graphic Annotation Groups. Currently you have to go to the viewframe properties, etc. too complicated.
Maybe place them in the TOC like any other layer? The added bonus here would also be that you could layer them relative to the other feature classes in the TOC so that they could be displayed in any particular order you wish☺
At Pro 2.6 we added the Graphics Layer. Like you request, it is easy to access - listed right there in the Contents pane, and easy to edit - has it's very own ribbon.