I'm also curious about this. As a data point: we're fully remote and are in a similar product space @ Guilded (http://www.guilded.gg). One of our best early decisions was to use our product exclusively for all of our work communication.

For us, this degree of dogfooding - which is really only possible at a fully-remote company - has been directly responsible for too many features and improvements to count. There's no better way to develop empathy for your users and a deep care for your products than to have your entire team rely on them for their most critical communications every single day.

Not all companies build products that facilitate remote collaboration, but I think that remote work presents some unique opportunities for those that do.