OK, I hope this isn't something that is not open to debate, or that has been suggested before.

I'm not sure why anyone would want to, but what if you wanted to start afresh without cheating? You seriously don't want your old account any more, but if you started again it would be multi-accounting!
So, how about (maybe in Preferences), you can delete your account, OR restart it - same username and password, that's it. It will ask you, like, twice, before the database actually deletes it.

Opinions, please? Or anything to add?

If banned accounts have been left on rescreatu for a very long time, I think it would be best if there was a "delete your account" setting. This would give othes an opportunity to snitch names that have been left on accounts for a very long time as well.I think mods should also be able to delete banned accounts so as to give other people a chance too. 

For example, my old account on Rescreatu was left for 4 years, untouched. If there was a "delete your account" option on the website 4 years ago, I would surely have deleted it and allowed other users to grab those names that I had from way back then. This way, there would not be supposed multi-accounting cases

 Ashdog has a point there, but I don't think that's much of a problem, as my old username was dragonz,and there was another username called Dragonzi. That was confusing enough, but we got over it.