it would take days until the implementation is done by theymos.
I'm sorry, did you say "days"? I think you're either not familiar with the pace of change around here, or you misspelled "decades".
Such a thing would be useful for reporting chronic shitposters/spammers instead of the now-tedious method of reporting each piece of shit post one-by-one. I used to be a bit passionate about visiting Bitcoin Discussion/Altcoin Discussion and reporting garbage posts and then checking profiles to see if that was a pattern, but it's far too time-consuming. A simple "report profile" would be nice, and then a mod could do a quick check of a member's post history. Usually you can just look at the first page and conclude whether someone is a bounty spammer or not.