If the announcement of the contest gets a certain number of downvotes (say -300?) , lets make the contest unrated!!! Lol ok maybe people can just spam with downvotes in case their round did not go well, but still -300 should be a large enough threshold...no?? Let me know what you think. It has happened in the last few months that the round quality was genuinely was weird (copied problems, stupid tests, or just stupid problems in general). In some cases the round was declared unrated. And since codeforces does not have an unregister button yet like atcoder, maybe this feature will be useful