They already answered this. Linkshells are designed as chat-channels only. Nothing more, nothing less.
SE has clearly "listened" in the past when the playerbase uses content/systems in unintended ways. Hunts are a great example, as is XI's ninja job.

In the absence of a more flexible FC system, players have used linkshells at times as pseudo community hubs. Again, hunts being a great example.

Without meaningful improvements to FC infrastructure, adding in minimal ls improvements could go a long way.

Either way, we need an answer from SE on the topic of community infrastructure.