Custom Fields in Feeback Report

Hello,

regarding the Customer Feedback section, we miss two important fields, let's name them as Importance and Type:

Importance: to categoryze the importance of the Client Complaint as low, medium or high.

Type: to clasify the client complaint as a Grammar, Terminology or Style issue.

BUT, we've just realized we can not create Custom Fields at Feedback Report scope.

Would there be other solution?

Would someone find these fields usefull?

Thanks

Laura