Should those deleted historical questions be reinstated with the new lock feature?
The entire argument in favor of deleting these fun and, frankly useless questions has always been that they created broken windows. They set bad examples of what's acceptable on Stack Overflow; they polluted the top question lists, crowding out legitimate questions; etc.
The new lock format the team has come up with eliminates these concerns. Un-delete them, and lock them.
If it's a useful resource that:
- was linked heavily from outside Stack Overflow
- is not available somewhere else on the Internet
- was content created by Stack Overflow community members
I wouldn't have a problem with undeleting and locking an old post. If it's just a list of links to favorite cartoons or t-shirts that were created by other people, I'd probably let it rest in peace.
Note: These are just my personal guidelines for applying the historical lock or deleting a post. It's ultimately up to the community, so vote accordingly.