It’s ok then.
I put blackboard in one big prefab, which also has renderer, animator with it. In this case, I don’t want to duplicate this big prefab for the blackboard’s sake, therefore I want blackboard to be one external asset.
Now, I seperate the blackboard away from this big prefab as a blackboard prefab, and the big prefab instantiate this blackboard prefab according big prefab’s configuration.
you are right about the blackboard design. great works.