I dont really understand the doubt but here it goes,
Making the ID an equippable item serves 3 main purposes:
1- It gives the Team and the Official Factions a tool were to display in-game the expected behaviour of the pilot carrying the ID by making use of its text..
2- it guides the player's behavior by clearly stating its role and/or intent expected from him in-game.
3- informs others scanning the ship what to expect from that player's conduct.
Therefore, and by its very nature the IDs are NOT a rolaplay item but more of a rule-template in-game for the expected behaviour of the carrier of sayd ID.
For all intents and purpuses, the player factions or groups BELONG to "X" npc faction wich determines theyr IFF, later as they become official they obtain their own custom ID still belonging to the same IFF
Then depending on the RP behind the Oficial Dom reqiest aproval, the factions MAY be somewat diferent/new from the IFF they represent
At wich time the Admin Team could choose or aprove a new IFF for the sayd ID wich gives the factions the chance to be something diferent or new, meaning canonization like it happened with Bristol.
This is my understanding of the system and honestly think its pretty clear. Maybe Higlight the importance of the ID more on Discovery would help the new players.