Would recommend doing what Google does with Docs and such, and not have empty repl's auto save until at least one character/space is typed. Would help cut down on empty repls that I have open, just in case I need to temporarily use it in order to test a certain thing and all I want to do is to copy and paste that segment of code over instead of searching around to placing ignore characters where needed. (Unless after 30 minutes the blank copies automatically delete themselves. If that's the case, nevermind)
Or, alternatively, not have repls auto save until manually saved the first time.