Restrict selection for HubSpot user property fields

I came here to post the exact same idea. To expand on @MartinLeibi post:
Currently we can create custom properties with the “HubSpot User” as a propery type. However, these by default show every user in the portal, including for example external users like us HubSpot partners. Clients would love to be able to create a custom user property - but limit this to specific users, or even better, specific teams.
For example a client would like to have a custom user property on the company level as follows:
- Business Development Rep
- Customer Success Owner
etc.
Of course we can create a custom drop down property - but this would need to be maintained if there are joiners or leavers - and because it is not a “HubSpot User” property you have limited actions in workflows, reporting, routing etc.
Instead - imagine creating a HubSpot User Property but limit the options to a specific team. When people are added or removed from the team the user property updates automatically.
Also - imagine being able to do the same with the existing Contact Owner, Company Owner, Deal Owner, Ticket Owner etc properties. Currently each of these default properties show everyone that is a user. In large organisations this is not ideal - especially if you have external contractors etc as users.


Example of a custom user property