For large environments, I may want to apply MBean
operations at different levels of groupings depending
on the situation. For example, I might want to apply a
change to just one logical pair of 2 nodes for some
local changes, but to all pairs for global changes.
If you could add a Cluster to a Cluster, it would be
possible to create an n-level tree hierarchy. Then a
change could be applied at any level of the tree from
the root node down to an individual leaf node as required.