It is useful to see who actually attended an event (rather than signed up, but did not come)

Also will be helpful to see at a glance if someone has declined, cancelled or not responded to an event.

Currently, the 'status' column doesn't say anything other than 'Invited' 'Attending' 'Attended' and a blank for specialised cases.

It is helpful to understand who regularly is not responding to invitations, or regularly cancels an event, etc. We find this information is not easily available at a glance