Just based on the bulletin board
Mercenary - Conflict Zone kill Missions
Bounty Hunter - Pirate kill missions
Assassin - Kill mission of named targets, be they defectors, escaped prisoners, Celebrities, Pirate lords, Disloyal military commanders or Key figures on another faction
Pirate - Obtain stolen goods from target ship
Salvager - Collect legal goods from deep space
Thief - collect illegal salvage from deep space - stolen goods wanted (need not be pirated can be found in WSSes)
Search and rescuer - Missions to rescue Life pods
[not sure what this could be called] - Hostage Rescue missions
Privateer - Kill Trader missions a form of economic warfare
Terrorist - Kill Civilian or authority ships missions (violence to promote political or economic change)
Miner - Osmium, Palladium (or it is platinum) and Painite missions
Courier- Courier missions
Contact Freight Hauler - Legal Cargo delivery missions
Smuggler - Illegal Cargo Delivery missions
Tramp trader - Goods Wanted Missions
Power Play
Gun hand - Various conflict zones that offer rewards as a legal Auxiliary on a long term arrangement
Privateer - Undermining the Economic and Political actives under warrant
Cargo Hauler - delivery of Power play tokens
Only explorers lack missions - Explorer rank locked Courier missions aside, which is more courier than explorer
And there is nothing stopping you killing NPCs for kicks.
All this can occur in solo, so Player to NPC
NPCs can try to kill you for seemingly no reason, you have no cargo but and they don't scan just declare they will boil you up.
So to the OP's original question
But what seems to be happening in Open play (NPC's don't do this...), is players interdicting and/or simply
blowing up other players without any motive for robbery. I didn't see a "role" or "career" listed on the FD
site for this type of play (Eg: trader, pirate, smuggler etc).
Do we need a new role and description to cover this mode of play? I keep seeing posts about Pirates but I
would suggest that is the wrong role title. [blah]
Nope; NPCs do kill you for no reason and no the role is already in there, Piracy, Privateering, and terrorism