I agree, there is now an overlap in "Criticity" and "Classification"
Classification
Criticity
Civilian
Confidential Data
NC - Not Classified / Public
Internal Distribution
C1 - Internal Use
Personal data
C2 - Restricted Distribution
Critical
C3 – Secret / Confidential
High
Normal
Low
In our current view, "Confidential data" and "Internal Distribution" should be deleted to avoid overlap with the new "Classification" metadata.
In your usecase you could use NC for your ¨Public" documents, C1 for your Instutitional use and C2 for Sensitive (we could perhaps rename "C2 - Restricted Distribution" by "C2 - Restricted / Sensitive".
Is this makes sense ?