Just looked in the current Squeak trunk image as an example. The max depth of a Class from Object (rather than from the metaclasses like Behavior, ProtoObject,

Just looked in the current Squeak trunk image as an example. The max depth of a Class from Object (rather than from the metaclasses like Behavior, ProtoObject, etc -- these to me are irrelevant to the count) is 8. There are very few 8, 7, or even 6 deep classes. The vast majority are between the 1-3 range.