What is the safe depth limit for content type in Alfresco without impacting the performace?
In other ECM products, if we go beyond 3 levels from the OOTB Content Model then we may have some performance issues but would like to know the same in alfresco.
However the "rule of thumb" of three is a good one for content modeling reasons. Any more depth may indicate that your base classes are too specialised and therefore be hard to understand and maintain.
A good rule of thumb is abstract thing, general purpose thing, specialised thing.