Planification lock

This plugin is simple, and exactly what I needed.
But is it still updated? And if yes, do you take features idea?
A good addition would be to be able to program the lock.

Let’s have an example:
I plan the auto-publish of a post for monday at 10am. I want the post to be locked from editing monday at 8am, so I’m sure no modification can be done in the 2 hours before it’s published.

Is this a thing that could be added in a next version?