I'm proposing that we create an orphaned tag for use only in the sandbox.
This will allow people who have ceased work on a challenge idea to indicate such. The idea here is that other interested individuals would be able to step in and continue development of the challenge and post it in its final form.
I've had this idea for awhile, but was prompted to actually ask while reading the comments for The Secret Handshake which was posted originally in 2014: (please note that I do not know PhiNotPi's intentions, but it seems like it might fit the proposed orphaned scenario)
@PhiNotPi are you still interested in this challenge? Would you be willing to allow me to implement this? – Rohan Jhunjhunwala yesterday
@RohanJhunjhunwala Sure, you can implement this. I don't think I ever started on a controller for it, mainly because I don't think this challenge will be as fun in practice as in theory. – PhiNotPi 9 hours ago
I think scenarios similar to the above are not too uncommon.
I'm curious to know if the community thinks that this tag might be worthwhile.