A certain amount of dates for a ban

Ok so, banning people. We do it to punish people and keep the bad stuff off our server, thats great. But what if we want to temporarily ban someone and not have to look up their user in order to unban them? What I'm suggesting is that, when we ban someone we should be able to set a date for how long they are gonna be banned for. So, say Jimmy posted an offensive meme in a community server, and there's a rule that says that whoever posts something like that must be banned for 7 days only. When Mr. Admin goes to ban Jimmy, they'll get to pick how long they will be banned for. They will then be able to pick the timespan they will be banned for in days. And thats it for my suggestion.