There was an issue in my last question on Math.Stackexchange. I wanted to first formulate the general idea of my question, and then work on the question a little bit. It would be ideal if I could do this (i.e., edit the question) when the question is deleted (hidden), so other users do not have to respond and potentially get confused by the active editing. I know that Meta's Sandbox is an option, but why can't we edit deleted questions as we can with deleted answers? I think this should be a feature.
Edit. For clarification, it was a self-deleted question. I still think that editing a self-deleted question should still be a feature. To prevent spammers, this might be a feature that users with reputations higher than some lower bound can earn the right to edit self-deleted questions.