I'm a huge believer in the "expert product manager" route. Meaning have one person who talks to all the stakeholders and every type of user. Who just knows you

I'm a huge believer in the "expert product manager" route. Meaning have one person who talks to all the stakeholders and every type of user. Who just knows your product backwards and forwards. And thus can drive what changes you need to make to push things forward. What exactly the means depends on the nature of the product.