That’s really up to the airlines, not Boeing.
Don’t they deliver them with the seats installed? Or is that a post-production thing?
To me, the A380 looks a bit bulbous and awkward; normal nose (emphasized by the flight deck windows), normal wings, normal tail, but just over-inflated in the middle. It looks like something a cartoonist would have drawn 30 years ago as an exaggeration of what airliners would look like, someday. I haven’t seen a 787 in person, yet.
But does that perception really matter much? I grew up around airplanes (a bit), know the history and which planes were developed when and why, and I will rarely base my flight selections on which plane it will be on. The travel websites I’ve used don’t even give that information on the first screen, you have to dig a bit to even find out what plane a given flight will use. I think people choose on price, schedule, airline, and maybe have a preference for the interior of some planes over others, but I doubt the exterior aesthetics make any real difference in attracting passengers.
The airlines choose how many seats to install and what spacing to use. Boeing may have standard options but all the configuration details are up to the airlines. They don’t have unlimited options, but they decide how much leg room you get.
Since all interior components have to be certified, Boeing most certainly has standard seating configurations of one or more approved seat styles and layouts. I assume they have/will obtain a green Type Certificate - that is, for the airframe itself without the interior - and Supplemental TCs for the various interiors they offer.
There may be -or will be, in time - third party companies that will design different interiors and seating upgrades and obtain Supplemental Type Certificates for those configurations. I’m more familiar with business jets, but I’m pretty certain that Boeing or other airframe manufacturers would much prefer that clients buy their interiors than that from a third party!
That said, I don’t know what seats Boeing is selling with this plane.
Unless it’s the realization that there’s a point at which outsourcing makes a process more expensive. They may have arrived at it now.
ANA seats would not fit most americans. My BIL traveled to Indonesia on ANA. He’s 6’1" and 200lbs. He was bumped to first class and uncomfortable in the FC seats.
They learned the outsourcing game from MacDac. The outcome was foreseen by someone who’d been through it before and who they should have listened to.
I’ve always felt outsourcing of this type was not a financial decision but a managerial one. Boeing used to build airplanes, but as their managerial ranks became dominated by people who had more interest in administration than in airplanes, they became a “system integrator”, i.e. they just put together the pieces. It takes an engineer to build a tail section, but when it’s done by a subcontractor it changes from a technical problem to one of contract administration. When they moved HQ from Seattle to Chicago the writing was on the wall.