I'm wondering specifically what the fluff is on this 'Mech which makes it "advanced"? In the TRO:3039 entry, the following statement opens the unit description:
Though carrying a blistering array of advanced technology due to its last-minute entry into the Star League
Defense Force ranks in 2780, the Trebuchet was also one of the first BattleMechs that went back to the drawing board
and was re-designed using older technology so Corean Enterprises could continue to manufacture the design
through the Succession Wars, though the customer was now the Free Worlds League military.
So what precisely does this mean? Is it an in-universe selling point made by one of the manufacturers to boost sales? The low ammunition count does seem like something the SLDF would do, substituting ammunition for Artemis-IV. But there is no SLDF / Royal variant.
Was this something missed?