why developing side characters couldn't help give the brothers good stories.
At this point, I feel like their main relationship arc has been almost successfully completed. Without substantial side characters, it's almost like Sam and Dean are stuck in this limbo where they are supportive of each other and also unable to fully help each other through their individual traumas. They're generally speaking, pretty comfortable and conflict-free. (I know there was the Amy thing, but it definitely felt pretty light weight to me - just think of how much more powerful it would have been had she been around for a few episodes first).
It's substantial, relevant side characters who can help tease out new levels and depths to Sam and Dean individually and together.
Re: Extended TV Guide spoilers
why developing side characters couldn't help give the brothers good stories.
At this point, I feel like their main relationship arc has been almost successfully completed. Without substantial side characters, it's almost like Sam and Dean are stuck in this limbo where they are supportive of each other and also unable to fully help each other through their individual traumas. They're generally speaking, pretty comfortable and conflict-free. (I know there was the Amy thing, but it definitely felt pretty light weight to me - just think of how much more powerful it would have been had she been around for a few episodes first).
It's substantial, relevant side characters who can help tease out new levels and depths to Sam and Dean individually and together.