OAuth scope changes for migration from REST API v1 to v2?

[shwetagulati]

1.. None v2 APIs have classical OAuth scopes documented? All are granular scopes whereas v1 APIs have classical scopes as recommended scopes. Are classical scopes in plan? What is the plan generally? Any scopes deprecation plan?

2. In regard to, are classic scopes generally the parent scopes that can be used for more than one APIs? Are they the superset scopes and granular scopes the subset? 

3. To move from v1 to v2, can't Atlassian make auto changes for corresponding OAuth scope changes so that clients don't have to reauthenticate? Do you have some suggestions/recommendations on how clients can migrate without the need to re-authenticate or elegantly?