mixpanel debug option should allow logs.

Great idea, I'm on board.

Any particular reason you want to use a custom table instead of watchdog? Watchdog has a UI and garbage collection ready to go and can be filtered by module key.

Changing the target branch to dev.

Yes we can use watchdog directly instead of custom table.

Updated IS.

Actually I'm gonna class this as a bug since there's a setting widget that doesn't really do anything.