PAW Cubeviewer: Asymmetric calculations

PAW cubeviewer introduced "on the fly" calculation within the cubeview. However these calculation only works in symetric mode which means that we can't cross specific elements of several dimensions to create calculation.

A simple example in financial data cube: We would like to calculate the difference between Budget 2019 and Restatement 2018 (Restatement is historical financial data that has been reworked to be comparable with the following year). In the cube, we have the YEAR dimension which stores 2018/2019 and the SCENARIO dimension which stores Budget/Restatement. The cubeviewer currently only allows [Budget].[2019] - [Budget].[2018] and [Restatement].[2019] - [Restatement].[2018] calc. We would like to be able to do [Budget].[2019] - [Restatement].[2018].

Furthermore TM1server accept asymetric request using Rest api MDX call. The following statement is actualy valid for TM1server:

"WITH MEMBER [YEAR].[YEARS].[ASYM_CALC] AS ([YEAR].[2020], [SCENARIO].[BUDGET_OFFICIAL]) - ([YEAR].[2019], [SCENARIO].[FLASH_RESTATED]) SELECT {{([YEAR].[2019], [SCENARIO].[FLASH_RESTATED])},{([YEAR].[2020], [SCENARIO].[BUDGET_OFFICIAL])},{([YEAR].[ASYM_CALC], [SCENARIO].[BUDGET_OFFICIAL])}} ON 0, HEAD({[BUSINESS_UNIT].[BUL620PU]}) ON 1 FROM [01A_PLPRODUCT] WHERE ([PERIOD].[M12] , [PRODUCT].[OGD99999] , [LOCAL_CURRENCY].[LOCAL] , [VALUE_TYPE].[VALUE] , [ORIGIN].[DIRECT_OG] , [PL_PRODUCT].[R00100AA] , [CUSTOMER].[CU999999])"

Workaround: There's none within the cubeview.

Proposed solution: Enable calculation within the cubeviewer "asymetric mode"

Benefit: In cube models with 10-20 dimensions, symetric calculations are often useless as data to be compared is often stored on asymetric locations. The benefit would be quite huge as asymetric views with asymetric calculations greatly simplifies end-user cube exploration and substancially inscrease his/her productivity.

I've attached a file with screenshots to further illustrate my request