So i'm also playing subnautica below zero with my boy atm. Its a bit more accessible (or im willing to look up spoilers) more than the first game, so hopefully will revisit the first..
But i just today built my first addon for the sea truck... to go from seat only to walkable interior was such a joyous experience.
In below zero, you start off with just a pilot seat experience, but then go to full interiors as you unlock and build different modules for it. To finally get out of my seat, and then have the growing utility of the truck becoming a full mobile base is so satisfying. It works, its undeniable, it would be so good in elite too.
Well, its unlikely going to happen here, but for anyone who hasn't played below zero, recommended.. its a great experience.
Source: https://www.youtube.com/watch?v=OhK_LERt4so
They must have had 50000 developers working on this game.