Look at skills/abilities instead of roles. We still need branding. Artist types are good at that, and weaker at interaction/systems. We still need someone who has lots of empathy for the business/user problem, and can come up with workflows. They usually are not as artistically strong and are technical but not super rigorous. For production stability, need engineer types who are rigorous about correctness. So for example... artist-types work with interaction-types on branded design system (which is always a work in progress), overlapping w/ marketing. Interaction-types build prototypes out of the design system, together w/ SMEs etc. When we have confidence this is the right thing, need real engineers to make it solid/trustworthy. That's just one riff. Of course people have different mixes so it's team specific.