In the lore, it is explained that the parent company of Saud Kruger also runs the passenger mission service and makes the luxury cabins. Effectively, they have a monopoly on luxury space travel because they made the luxury cabins so that they could ONLY be used by the Suad Kruger line of ships. It is not mentioned how they did this, be it making the cabins in non-standard sizes and dimensions, or having a proprietary power coupling etc....
I think that luxury cabins should be on luxury ships. Makes sense to have them only in luxury ships, so at most I would give it to some Imperial ships made for duke and king ranks and above.
I agree with this.
As for luxury cabins being available on Imperial ships unlocked at a rank of duke or higher, the only one that would be able to fit the cabins would be the Cutter. The Clipper is unlocked at the rank of baron.
A possible solution without changing the lore could have that Gutamaya start making their own proprietary luxury cabins. Since Gutamaya is restricted to the pre-existing slots sizes of the ships that are already in-service (they do not have the oversized size 5/6 slots that the Saud Kruger ships have) they are forced to make size 6/7 luxury cabins instead of size 5/6. Thankfully, the size 6/7 slots are slightly larger than the non-standard size 5/6 slots on the Suad Kruger ships, allowing Gutamaya cabins to have accommodate 25% more passengers (5 and 10 passengers for size 6 and 7, respectively).
On the other hand, WHERE IS OUR G@#$%& PANTHER???!!!
Hiding in a folder on FDev's internal server. I suspect that they have most (or at least some) of the assets for the Panther Clipper ready, but they don't want to work on the rest until they know that the community will manage their expectations for the ship. Considering that the ship was easily the single BEST ship in FE2 for everything other than exploration, I don't think that the ED version of the ship will be that true to the original in order to maintain some semblance of game balance. Knowing that quite a few people will be VERY vocal about a balanced Panther Clipper not being able to do activities X, Y, and Z better than every other ship (in some cases at the same time, and occasionally with 'best explorer' being listed as a 'requirement'), I understand why FDev wouldn't want to release the Panther Clipper yet. No matter what they do with the ship, someone will be disappointed and complain about it.
Of course, that doesn't stop me from wanting a Panther Clipper.