We do have various employees like myself that monitor this. You could provide through the account team, or support could open a new internal bug for your fixes.
If things are broken or not working as expected, I'd go the case route, and the account team can help prioritize with engineering getting a fix out there.
From my point of view, it includes many aspects: intuitiveness, ease of use, functional integration, response speed, user customization and scalability, compatibility, stability and reliability, and interface aesthetics
