I appreciate your perspective and as someone who plays the devil's advocate quite frequently, I respect your input here.
You are on point that this is definitely a QOL improvement that would make managing a network significantly easier. In that regard, I believe that it does come down to balance like you implied.
Without going into details about this one case and just talking about time involved, if this change were made it would allow my character to ICly accomplish something in about 5 minutes by themselves that is otherwise going to take an hour or more, and meeting with multiple PCs.
From that perspective alone, I would trash can my idea and err on the side of creating RP.
The other side of the coin is that the change I propose would enable creating truly complex and dynamic networks. Networks that would be easier to expand to more characters and make them more accessible to a wider portion of the player base. That is assuming that my character is benevolent and willing to share. As you mentioned in your reply, you've seen the opposite where networks got too "powerful" and had to be modified by staff.
I feel like I am fairly neutral here. Most of my Ideas evolve from me running into limitations with the code. Limitations where I can envision something, but what I envision does not seem to be possible with the code in it's current state. While the suggestions would benefit my character, they are not for the exclusive benefit of my character. They are changes that would make the game more dynamic.
All that being said, I am ready for this one to end up going the way of my change notification suggestion. By that I mean, the likelihood of people exploiting the Idea outweighs the benefits of implementing it.