I'm sorry to see the change. The biggest problem is not that this change somehow damages the Saud Kruger Passenger line, it's that it allows it to compete with non-passenger ships they should not. Hopefully the Saud Kruger's won't eventually face any changes or nerfs to better "balance" them against everything else, where it used to not matter at all.
The real crux of what could make the Saud Kruger line special was the exclusivity of Passenger Modules. This is already a paper thin distinction, since even the grimiest utility hull in Elite can carry 1st Class Passenger Accommodations. A more nuanced system of which hulls can carry a grade of Passenger Modules would have enhanced the distinction of the Passenger Courier career, as well influenced the progression through it's early and mid phases.
Another problem (all IMO) is that the Passenger career is dependent on Missions. When I open the Passenger Lounge and find 100% of missions from half the factions want to make a one-way trip that's 21,000LY... How is this conducive to building the gameplay cycle for Passenger Play? I've essentially got to spend 30 to 50 gameplay hours jumping round trip, completely separated from the Passenger related gameplay focus, just for one mission.
Worse (again, IMO) is that so many high paying missions have millionaire VIPs paying multi-millions for a trip to a tourist holiday hot-spot... And they'll ride in an Economy storage tube and be happy. I think this heavily devalues and disincentives the gameplay progress toward the upper tier of the Passenger Career, where the focus of earnings should be.
I would really prefer to see the Passenger Lounge converted into a Commodity Market style menu. Instead of Commodities, list destinations of varying ranges. Different quantities of people looking to go, for each. Group them by the quality of cabin they are seeking to hire. Lots of dirt-cheap Economy, on up to the single digit Luxury types, paying top prices per seat.
System Economies and States (at both source and destination) could push and pull both the numbers of Passengers and what they will pay, creating even more interest for keeping up with the BGS to find the sweet spot for each type of Passenger ship outfitting. Then special Passenger missions could be offered for the non-bulk things which have more pull on the BGS (transporting prisoners, refugees, soldiers, protesters, politicians, and of course the VIP types).
Maybe put a cherry on top, and require the Business, 1st Class, and Luxury Cabins to use special "Restock" of various supplies (and qualities) at the Station, to maintain the expected comforts. Give a CMDR's Passenger service a reputation level, based on this. Do you keep your ship always stocked with in-demand drinks? Top rated food? See this repaid in finding MORE high-class (high paying) passengers ready to fill your 1st Class and Luxury seats. CMDRs with a reputation of cut-rate or even zero in-flight services... Maybe find fewer top class customers in the Lounge, but the lower end Economy fares wouldn't care and still be plentiful.