What do you think the ideal role of a product marketing manager should be in roadmap planning?

I think it depends on what the priorities are at the company and the other roles pre-existing (they both affect what the PMM needs to do more of), but I think the PMM contributes input for the roadmap

Depends how market-facing your PMs are. If they're obsessed with serving customers and creating products and features that will generate new business, probably don't need to be very involved. If they'

As we move into a product-first world, the best companies have cross-functional teams designed to drive user engagement and success. Product Marketing is a key component of this.  Roadmap planning is

No matter how market-focused your Product Managers are, they still have to balance market needs with technical requirements. Product marketers can help by providing quantitative data around what cus

Market research / gaps / competitive analysis / analysis of market value of new features / products. they would work hand in hand with PMs to consolidate all the info into a true roadmap.

I agree with a lot of the other answers, if there is not a lot of voice of the customer in the discussion, it can often be the role of a PMM to insert it. I'd also recommend you talk about the timing