CLASSIFICATION: UNCLASSIFIED Up front - I recommend having an indicator title and it being optional. It sounds to me that this discussion has been overlapping the two concepts of a title and an identifier. I may be misunderstanding or not completely knowledgeable of the STIX indicator object but a title is human understandable (context) only. I don't believe tool vendors will have a barrier to entry because of a title because tools can't get context from a title only humans do. The vendors will be able to associate with the indicator, if no unique 'ID' is available, through character matching, right? However, this is why an indicator 'ID' and a 'TITLE' is needed. Indicator 'ID' will enable non-redundant unique mostly computer readable identification. Indicator 'TITLE will enable humans to make a quick visual and cognitive "context" out of a title. Also, the 'ID' and 'TITLE' should have associated naming conventions (RULES) to ensure uniqueness and understanding as much as possible. So my recommendation is to have the indicator title, albeit optional, but STIX also needs a mandatory indicator ID. Vr James