That's option #2 in the poll as I said earlier, it's really the only option that will allow us to make a change from the status quo and build a consensus. Mosh even said on the 4th comment in this thread that he and Yoshi were already doing #2 anyways. Since heavily disliked maps are currently deleted at the discretion of admins, either we propose/suggest a popularly agreed ratio or we let them do their thing I guess.
All we should really be discussing is what should be the ratio of like/dislikes that will determine whether a map gets deleted or not. A suggestion could be a map can only be deleted if its total amount of dislikes is minimum 2 times the amount of likes, and the total (likes or dislikes) on such a map needs to be at least 100 in Race and 50 in Mix? Seems to me that people in Mix don't bother as much liking or disliking maps than in Race, added to Race having generally more players.
There can be exceptions too, such as classic maps that are loved by old timers and regulars, but disliked due to length or difficulty (e.g. Marathon). Muh Marathon <3