I always thought that this information should be embedded into PDF or other format out output at the time any output was generated: Drawing state, when it got that status, who extracted it, when it was extracted.
It's complicated to set up for conditions where no one will approve until they see the final drawing, then have to create a new version of the drawing with their signatures typed in with the chance for making changes that weren't expected. So what their signatures are on is not what they looked at before they approved it.
Personal favorite - drawing incorporation for a change to 'clarify drawing' is approved, but when the approvals are entered into the Rev history block, drafter fails to note the 'Follow Environment' setting for views and that he's now in Wireframe mode. Blocks of spaghetti where views once were.