Feature Request: Ability to add anyone as the request of a child ticket

Current: 

You can only send a side convo child ticket to another group on the Zendesk which is very limiting. 

Feature Request: 

Ability to set any group or end-user as the requester of a child ticket. 

Context: 

Sometimes things needs to be followed up with someone outside of Zendesk, and also need to ability to report on that follow up via ticket fields etc. Doing this via a side convo email is very limiting as there's no fields to report on etc for the actual convo.