Tab complete is to eager to complete some entries. This is very confusing behaviour, as it gives the impression that there are no other valid entries. For example if I type:

/subsystem=datasources/d

And hit tab it will tab complete to:

/subsystem=datasources/data-source=java\:jboss\/datasources\/ExampleDS

There there are actually several other operations I may wish to do:

/subsystem=datasources/data-source=myDs:add
/subsystem=datasources/data-source=*:read-operation-description(name="add")

I think this is a major problem for the usability of the CLI, especially for new users.