How about we get a Quest were Ordis and our Landing Ship get destroyed, and we need to Upgrade our Railjack with extra Room where we can live.
Everyone gets 9 Room's to place and you can Decorate them with Dojo Decorations, you could even place Helminth or our Foundry wherever you want just like the trading post in the dojo.
Our Railjack fight Rooms remain as they are and our living rooms are inaccesible while in a mission.
possible Room Themes:
Grineer
Corpus
Tenno
Orokin
Entrati
and we can swap them later at the Railjack Dock.
And for People wo want to keep there Orbiter, there is a Option to Swap Back to Ordis (+placeable Dojo Decorations).
In the Loading Screen just change the Model with the Railjack.
What do you think?