Determining Premium subscription mode through REST APIs

CURRENT SITUATION
There is no way to determine if an instance is running in Premium or non-Premium mode. Some capabilities are dependent on this (for example what issues can be moved or not moved to a new location in Classic/Team-managed projects).

RELATED REST APIs
There is an experimental API GET /rest/api/3/instance/license command that returns the current licensing mode for the different Atlassian offerings on an instance. It however only returns FREE/PAID.

SUGGESTED CHANGE
Leverage existing REST API /rest/api/3/instance/license GET command to extend PREMIUM as an allowed value in addition to current FREE/PAID values, alternatively maintain the FREE/PAID field and add a new key to determine Premium=true/false. This should be a straightforward extension of this command to implement.