First of, fantastic module, have been looking low and high for something like this for a long time, and it’s been here under my nose all the time.
The only thing that makes this not work perfectly for my scenario is that I would like to check “Publishing date/time is required” to remind users to assign a publishing date/time, but if they go and edit the node after it has been published, and the “Publish on” field has been nulled, they get an error message when they try to save their changes.
Ideally, the “Publishing date/time is required” should count if and only if the node is not published. If it is published, it should not be required.
Is there some way to get this effect right now that I am missing or is it a new feature that needs to be added?