We are a slack heavy company. So we have our own announcement channel for all things Marketing that I actually started so that we could share our updates!
We also do quarterly roadmaps and retros where PM + PMMs present their upcoming roadmap and a retro on their activities from the past quarter. All of Product and PMM go - and we invite our key stakeholders across the business, including the leaders from other areas of Marketing.
Starting with those three functional responsibilities - insights, launch/go-to-market, and sales enablement makes a ton of sense for a team of that size. Depending on the current and future product set, I've also seen teams re-org to match customer segment (SMB, enterprise, etc.) or paired with a product manager who is either tasked with overseeing a product and/or stage of a user life cycle (e.g. acquisition, retention).
IMPACT. So often product marketing teams get snowed under by trying to do all the things. They focus on completeness. They want to have every box checked. But they have no idea if any of it is working. Every other team in the business will have endless needs - endless requests - of PMM, but you have to get good at calling out what metric you're focused on and how you think you can ladder into it. Get good at talking to the metrics of the business and get good at thinking about how what you do ladders into the business stategy.
Great question. Yes, been there & struggled there before. Think ultimately the more you can make product marketing a group of strategic thinkers and enablement gurus to marketing, the more clout your team will build. If demand gen wants to parnter with PMM to understand how to market features for a campaign, if content looks to product marketing for competitive intel or market insights to build content, those are all signs you've built a PMM with real value to the marketing org.