I think Corcky should stay, the running costs are low, the queue is always short and i usually use it for the last ride of the day. First time i went on it, it did hurt, then onwards though, it was fine, you know what to expect and for its age its still a good ride.
It is part of the heritige of AT, adn that is another reason it should stay, age is (In my opinion) not an issue as long as it is safe. The mad ride at BPB, that mouse thing, looks like its falling apart, everytime a train comes past the whole structure moves, thats still a great ride.
AT needs to keep some heritiage, and this is part of it. AT needs a mix of old rides and intense new ones.
Corcky will be there for years, new paint, and Rita is built around it, i think that says another of what AT think of it.