The general tone should be empowering better decisions still during planning, which drives higher impact.
That can be a bit lofty, so I'll break it down into some principles:
- Look into scoping and what possible flaws scope has
- Is it meaningful and focused?
- Is the delivery timeline acceptable and realistic?
- Try to anticipate problems and friction. Frontloading them will be better in the long run
- What budget are we willing to spend (resource-wise, time-wise, etc)
- Are people avoiding a certain tougher, but important topic?