QUOTE (LittleHurt05 @ Apr 1, 2014 -> 09:02 PM)
Like you said, it's a network comedy, not a detective murder mystery. They had a plan in season 1, but as time progressed they could have altered their thinking as the show developed differently. They didn't need to have the awkward scene with the kids and instead the mother could have lived or something else.
I think after season 5, around when I stopped watching, they should have just quit with the idea that he was actually telling his kids anything. Just stopped, no explanation.
There are a lot of gimmicks network tv shows begin with as an interesting idea to get on TV that don't necessarily lend themselves to multiple season commitments.
For instance, the office, at some point nobody really remembered that this crew was "filming a documentary". Eventually that was just a style, and occasionally they'd nod to it.
Now that show went off the rails in its own way, but it would have been severely restricted if they kept to that. Jim could have never left the scranton office.
At some point they could have pivoted narrators to freshen it up. How I met your Mother would have been a general theme about looking back to their younger days.