Extra Custom Big-Sub (more details)

Please read all before voting, if you’d like id appreciate comments why you downvote :)
I was thinking, base building is very customizable and there’s gonna be a big sub in the game soon, so why not make it extremely customizable? Like decorative exterior pieces, interior specialized pieces, placing windows on the walls. (the big sub isn’t gonna be a square by the way)
imagine making a sub fully unique to you, even being a replacement to a base with the amount of customizable components! if you don’t like base building, it’ll still look great without modifications but it allows all of us to get a lot of cool stuff to work with. :D
Hope you like the idea, I’m really happy with it!