Older Beholder
Hero
As a DM I'm open to the players being able to write in a connection or contact to help them in the way people have been discussing. I tend to make it cost an inspiration point to do so as I think this is more interesting use than just giving advantage, I actually thought this was an optional rule, but it could just be a house rule. (I had a quick look but couldn't find any mention of it)
I think this flexibility of authorship where players are trusted with more authority to co-author things as they relate to their character is an example of how the game has changed over the decades, even if it's not something all groups do, it's more common these days. (at least in my experience, I don't recall this happening as much a decade or two ago)
I play with a group where one player will take over an NPC if the DM isn't really doing anything with them, often fleshing them out and giving them a bit of backstory which is entertaining.
I think this flexibility of authorship where players are trusted with more authority to co-author things as they relate to their character is an example of how the game has changed over the decades, even if it's not something all groups do, it's more common these days. (at least in my experience, I don't recall this happening as much a decade or two ago)
I play with a group where one player will take over an NPC if the DM isn't really doing anything with them, often fleshing them out and giving them a bit of backstory which is entertaining.