It's usually the actor's job to give the backstory to the characters, not the playwrights. If the playwright thought that HIS ideas were absolutely necessary, they would BE part of the script.
I'm not trying to be snippy here at all. Does that mean it's never discussed? Not necessarily. But at a number of interviews the writers of N2N have been at odds with what they "think" about backstories.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.