I think this would be helpful in situations where a user inadvertently or even intentionally starts or worse yet edits a note name to begin with a period.
The current behavior is to allow this naming to be committed, but then immediately the file is unrecognizable by Obsidian. This could go unnoticed and the file could be lost within a vault while not actually being lost.
The worst part is that, assuming they did not notice the disappearance upon committing the name and they have update internal links enabled, there will be no links left within the vault for the user to realize it went missing.
As I type this, I am beginning to believe this warrants a bug report, even though Obsidian is simply following instructions.
Thanks.