This idea has been merged into another idea. To comment or vote on this idea, please visit APP-I-2399 Add custom field of content type Aha user.
In our organization, we assign features to a Product Owner AND a Business Analyst. I love how we can add a custom field type "Personas"; it would be great if we could also have a "User" field type so I could associate more than one Aha user to a feature.