This service is not theoretical for us. The team behind it also builds Time-Off PRO and NativeDocs, two Salesforce-native products currently in early access and not yet listed on Salesforce AppExchange. Working through packaging, configuration, and platform limits on our own products is part of how we stay current on what AppExchange delivery actually involves day to day, from namespace decisions and custom metadata to governor limits and the security review process itself.
If you want a closer look at how we think about packaging and readiness, our guide on building an AppExchange-ready application walks through namespace and data model decisions, configuration through custom metadata, permission sets and licensing, governor limits, upgrade safety, and what the security review looks for. Our case study on partner list view automation is a longer look at a related engagement: Metadata-API-driven automation delivered as a sub-vendor for an enterprise customer of a Salesforce consulting partner.