Let me be the first to second this proposal. We have been working with the custom object “Deliverable” for several months now (thanks to Chris Carolan’s work) and it has truly revolutionized the way that we are able to manage everything in the post-sale process, even with the limitations that come with Custom Objects in the HubSpot platform.
Having this as a native object that can fully leverage all aspects of the platform would be a game changer - it would provide for easier reporting, better visibility, simpler automation, and even easier manipulation (ex. updating stages from an associated record instead of having to click into the custom object record itself).
As our company works to prepare for and implement NetSuite as an ERP to house all of our non-human data and activity in the next 6-8 months, having this Deliverable custom object is providing us a clear framework to assist NetSuite in mapping across the two platforms as they work with a 3rd party implementation team. Again, having this natively in HubSpot just makes sense and opens SO MUCH possibility for all users (not just those who can afford to pay for an enterprise tier solution).
I will advocate for this time and time again and would love to talk through what this can/should/already does look like for anyone who would like!