DAXMD Power View DCR: allow &rf filtering by Key and UniqueName better by furmangg

Create a filter on the Calendar Year attribute in the Date dimension and filter it to CY 2003. Note the DAX query Power View generates filters by the key:

'Date'[Calendar Year.Key0] = 2003

Now if I want to change the filter value via the URL I must use the following syntax:
&rf=[Date].[Calendar Year] eq 'CY 2004'

Note that I have to filter by the attribute name, not the key. This makes it a bit challenging for other reports or dashboards or SSAS Report Actions to link to a Power View report and set the filter appropriately.

With the above &rf filter, the DAX query generated by Power View filters by name. That may be a problem if name isn't unique:

'Date'[Calendar Year] = "CY 2004"

If I decide to have &rf filter by key using this syntax:
&rf=[Date].[Calendar Year.Key0] eq 2004

Then Power View shows a new Calendar_Year_Key0 filter (additional to the existing Calendar Year filter). But because the existing Calendar Year filter is set to 2003 and I set Calendar_Year_Key0 to 2004, I get no data in the report.