SDO11 — Do we really need SDOSystemElement

The meaning of the term might be completely unclear to 3rd party persons. Can we do without using this term? Do we really need SDOSystemElement? One of the reasons for having SDOSystemElement is to allow non-SDOs to participate in the Organisation. Is it correct? If so, then if we decide to get rid of the term non-sdo then probably we do not need SDOSystemElement as well. At least, the term ‘non-SDO’ should be changed.