Thanks for commenting and reaffirming that this ability already exists, apart from a necessary UI tweak. And, it is a tweak, isn't it? Or is there some hidden complexity that makes this change way harder than I imagine it could be?

The extremely frustrating thing for me is that the promise of edit access has been dangled in front of me for six months now, but still remains out of reach. :O

My friends behind the curtain: if there's any way to work post editability into the mix sooner, rather than later, you'd have at least one wildly cheering fan out here, thanking you profusely.