Idea: Building a 2 to 8 Man Mount with FC?

Just popped into my head and it has before when thinking of how underwhelming the Airships and Submarines we build are after we're done building them.

So perhaps this could be a cool thing for an FC to work together on like it was supposed to be, but at the end, you get a unique/untradable non-sellable blueprint to make your own airship/submarine for use outside that could hold 2~8 players depending on the choices you made along the way.

I think this'd make Exploratory Missions way more interesting to take part in with the end incentive being a multi-man mount given to those that participated. A mount that looks exactly like your submarine/airship you built. This would also open up the interest for more people to actually want new designs for these airships and subs!

It could be a cool thing to dive into, just another thing we can customize much like Chocobo Barding, just way more advanced. Could even have designs as drops from various things like we already have with Chocobo Bardings. And many other ways of course!

I think I could expand more on this, but thanks for reading! :3