This spreadsheet:  

https://confluence.hl7.org/download/attachments/104578379/ResearchStudy%20new%20attributes%20for%20BR%26R%20draft%203%20OV.xlsx?version=1&modificationDate=1615929539096&api=v2

is a mapping from existing study analysis projects that have tried using ResearchStudy and identifed gaps.  This in dark green (rows 40,41) are true deficiencies.