I write these guides from the situations that come up in real Shopify work. The answer is usually less about a fashionable tool and more about choosing a boundary the team can live with.
Keep the live store in view
Proactive support starts with the store as it is, not a list of ideas prepared months in advance. It means noticing where the experience, theme, apps, integrations, or day-to-day operation are becoming harder to manage, then explaining what matters and what can wait.
Turn observations into a useful next step
A good recommendation names the problem, the likely benefit, the trade-off, and the smallest sensible change. That might be a focused theme improvement, a merchandising adjustment, a repair to an integration, or a short piece of documentation that prevents the same question coming back.
Stay honest about what should not change
Proactive does not mean constantly adding work. Sometimes the right advice is to leave a stable part of the store alone, gather better evidence, or wait until a larger decision is clearer. The value is having someone close enough to notice the shift and direct enough to say so.