Public calendar appointment status filter

[Hivos]

We have publicly shared the calendars of our location resources and viewing them in HTML works perfectly, except for one thing. The difference between Accepted and Declined appointments is invisible. This causes confusion in cases where for example you have a 10-11 am appointment and an AllDayAppointment of which only the first has been accepted.

I've checked the REST documentation on the wiki, forums and in /opt/zimbra/docs/rest.txt but no solution there

I'm thinking of filing an RFE to get something like:
"https://server/home/location@domain.com/Calendar.html?view=week&query=status:accepted"

Any other suggestions before I file an RFE?