You are not stuck with what the crawl found. In the setup wizard and on the dashboard you can curate the feature list: add a feature the crawl missed, edit a name or benefit, exclude a feature (it stays visible but is never promoted), or remove it. Anything you add or edit is treated as ground truth: it always makes it into the plan and survives future re-scans.
The promotion plan is editable before you approve it: change the product one-liner, audience, weekly content mix, cadence, and feature order. Editing is available while a plan is a draft or awaiting approval; to change an approved plan, press Regenerate. Curating features costs no credits.
All of this is available in the REST API under /api/v1/app-promo/.