Stay involved before the brief
I still stay close to product decisions, especially while the problem is still open.
I look at what is being treated as fixed, where the complexity really comes from, what the evidence says, and what the product has to deal with in the real world.
That may mean questioning a product rule, tracing friction into operations or policy, using research or analytics to challenge an assumption, or making an abstract decision concrete enough to test.
I do not need Design to own every product decision. I do want designers involved early enough to influence the ones that shape the experience.