I would say one thing that bothered me recently is that there is no fail message when something didn't post (ok my relays were shit). I wouldn't say this was a #nostrdesign issue more of a UX issue. I don't even know gods I came to have shit relays. The recommended "add relays" item is a win.
Yeah this has been explored a bit. The problem is that it gets annoying quickly. Better to show what has succeeded. Nostrudel does / did this, not sure if still do. Snort tried but needed tweakes but all tasks slower to a crawl now. Don’t know if Damus is planning on this feature - I think it’s being discussed.