"Just show me the prompt."
If you don't have time, just write the damn issue as you normally would. I don't quite understand why one would waste so much resources and compute to expand some lazily conceived half-sentence into 10 paragraphs, as if it scores them some points.
If you don't have time to write an issue yourself or carefully proofread whatever LLM makes up for you, whom are you trying to fool by making it look pretty? At least if it is visibly lazy anyone knows to treat it with appropriate grain of salt.
Even if you are one of those who likes to code by having to correct LLMs all the time, surely you understand if your LLM can make candy out of poo when you post an issue then it can do the exact same thing when it processes the issue and makes a PR. Likely next month it will do a better job at parsing your quick writing, and having it immediately "upscaled" would only hinder future performance.
The context windows before a prompt is often large and contains all sorts of information though, it wouldn't be just a prompt in isolation.
What would make sense for me is to use an AI to turn implicit context that is only there in the moment into explicit context that is stored in the ticket.
E.g. maybe you have your application open in a browser and are currently viewing a page with a very prominent red button. You hit that /issue command with "button should be yellow not red".
That half-sentence makes sense if you also have that open browser window as context, but would be completely cryptic without.
An AI could use both the input and the browser window to generate a description like "The background color of the #submit_unsafe button widget in frontend/settings/advanced.tsx should be changed from red to yellow." or something.
Sort of like a semantic equivalent to realpath if you want.
I do see utility in that.