Program roadmaps don't focus on a single product but consider several products and their development over time. Unlike a product portfolio roadmap it also focuses on interdependencies to other strategic initiatives, other departments like marketing & sales and the whole the whole organizations.
The prioritization framework usually focuses on high level goals like revenue increase, strategic fit, project hours and costs. But payback period and customer value can also be highly relevant.
Value (Y) criteria
Cost (X) criteria
Bubble (R) criteria