T5 is better than HG/LBB2 in for crewing requirement.
HG crewing iis "if your crew is too small to win the battle you die" LBB crewing is "if your crew is too big to make a profit you die". I never used HG for merchant ships.
The weakness of LBB is the issue of Watch keeping. You need two pilots
Pilot:
a) Once you cleared orbit, (to be understood as constricted water, not as a balistic trajectory) you may be going to jump on auto pilot, but safety would require two pilots, so that you always have a qualified person at the helms, (and that not only to enter new datas in the auto pilot but to interpret properly the overall situation and apply properly the rules of the road)
b) once you are in jump space, you do not need a pilot or a Navigator
Navigator
Once its navigation job is over, he do not need to be on bridge, only to be available if needed. This is a required position with little to do and most likely picked by people that also picked Pilot. So, while navigator is the skill, Pilot/Navigator is the position on every free trader I ever gamed.
Engineer
Enginiring always function. Life support and power plant at all time, while manoeuver and jump in alternance.
Gunnery
Out of jump only
Steward and medic:
Medic are on call.
Depending on advertized services and actual standards, Steward may be day work, on call, or on larger ship, a night steward with one or more day steward.
Security, not mentionned in LBB, anti-hijacking is all timee in effect.
Ultimately it is about having enough person to effectively organise a crewing bill Under
a) starport condition
b) manoeuver,normal condition, constricted space/docking/jumping
c) manoeuver,normal condition, open space cruising, Watch keeping
d) General Battle station,
e) Boarding/hijacking station
d) Jump
Under LBB, given the high level of automation expected, you may operate your freetrader with most crew stations manned on day work/on call for emergency. Only piloting require two Watch keepers during condition C. Once in jumps, the pilot/navigator, the medic/guner and the pilot could alternate on bridge to stand by the alarms and call the required help. Steward will nurse the passengers and engineer will have some routine check and maintenance -might even be repairs- to perform (even if most work is done in harbor, he may as well be usefull since his presence is required)
Of course, the medic been associated with damage control at battle stations, it would be more usefull if the steward is filling for medic.
have fun
Selandia