Thank you for your courteous and informative reply.
I agree that it is not appropriate for all actions. Basically perhaps an option to reverse a delete operation would be good, when you have an opportunity in the future.
Yes, I realised that the roadmap was most likely outdated. I only found it by chance as a side effect of a Google searh. The fact that the version references were old gave the clue.
Roadmaps have a habit of popping up quite inappropriately, such is power, and the peril, of the internet. :-)