We have made a change to how NPC submissions work in the sense that we will now generally use StaffPublic notes as a first step before recording an NPC in the CDB/family trees. This is also an excellent way of noting more minor/less frequently recurring NPCs. The updated text of +HELP CDB SUBMIT is quoted below:
If you make up recurring characters for use in your roleplay (septas, servants, etc), these should be recorded for posterity. How they are recorded depends on how much of a regular character they are; characters that only appear now and then are best recorded in a StaffPublic note whereas characters that are more present should have their own CDB and family tree entry. In general, Staff determines how a submission should be handled and often characters are added as StaffPublic notes initially and then migrated to the CDB/the family trees if it is merited.