Feature "Think about the Support"

Hi,
how do you think about a feature where the user can evaluate the Support?

I could so imagine:
When a user closes the ticket, then he can evaluate the support. He selects in a drop down list from 1 (good) to 6 (very dissatisfied).
It could also expand, for example, the response time or performance is evaluated.

So you could give feedback about the support and the user will also move to close the ticket.
One could also be a good overview of the customers give opinions. One could then better assess support staff.

Other ideas are welcome.
Regards