I guess at some point the game just doesn't care for realism. You'll probably be able to launch 16 ships per instance.Just my line of thoughts. You quite likely can store as many ships as you want, just like on other megaships around. The limitation of pads rather might rather matter in a very unusual situation. This would be when the carrier is not used by a single player moving his fleet around, but in the unlikely case that a squadron might actually use it in the intended way of being able to travel together.
This might make the "now everybody docks, we jump to the target system, launch and wreck havoc" procedure a little harder. Although not by much I would guess. It just would mean that people would dock and log off, till everybody who wants to come along is docked. Then you and launch, so the disconnected people can reconnect.
I actually think that what we saw there was a concept artist fail. Wanted to make good looking graphics and thought that putting the pads so close next to each other looks impressive. Little did they ponder about the implication of internal storage of that picture. I mean, when I looked at that, I even before thinking about the internal storage already noticed that the picture did not include any space for the sliding doors our current landing pads have. Opening one pad on the art we saw there would immediately block two other landing pads.
I am quite certain that if FD hasn't noticed the issue yet based on forum feedback, they will run into it in one of their earlier builds and change things. I mean, megaships are already modular, so I guess in the end they might just be a bit bigger than first planed, to provide the necessary space to carry all the promised landing pads.
So yea... concept art vs. final product. There always are some differences. We will see how things will turn out. I just expect landing pads to get some more space to avoid clipping problems.
At release, 100.000 people launched from Dalton Gateway. Don't ask me how.