Except there is!
Compare the following:
1. Flying around watching a wreck through the canopy.
or
Making your way hand over hand through the derelict, careful not the tear your suit, seeing the bodies of the crew floating around you.
The technical challenge is not FPS view but the hand over hand technique and collision on a human scale that needs to be created, they need to develop a method to record "scratch" damage, and then add a healing method, add an inventory for the pilot, add a GUI for inventory, add a method to apply healing technique, create animatins for healing, create noises for healing, create noises for hand over hand, create ambient noises.
2. Scooping up a can marked: "personal effects".
or
Entering a room and find a necklace in some drawer.
Again its not FPS view, its room scale maps, doors, how to track them being op[ened or closed, containers within the room, how to track contents, use inventory (must work for both picking up necklace as well a getting suit sealant healing), noises for entering room, for opening drawer. Are we having sneaking in Elite, if so how s that provided? Are we having picking locks, if so how is this performed? Is there a crime associated with collecting teh necklace, if so how is it detected/applied?
3. Driving your SRV outside an outpost scanning data points.
or
Walking through the abandoned corridors looking for clues as to what happened, puzzling together the story through personal logs.
Again its generation of corridors, pure RNG or persistant, ambient noises, personal scanner, scanner gui, audio log gui.
4. Driving trough a Thargoid base.
or
Walking through a Thargoid base.
so this is the simplest to implement as it just sounds like creating an FPS view, but what if you annoy one of the denizens, or try and touch a thargoid probe etc.
5. Unlocking engineers after getting a text message.
or
Running into someone in a seedy dockside bar who offers to set up a meeting with someone who might be able to do you a favour, for a price...
There's plenty to do, we just don't have the legs to do it.
So again its not walking about, its the NPC interaction - voice or text or both, how do you determine success or failure, is it automatic to get the contact, or does Elite need to introduce RPG style characteristics ? If so what? How are these determined, how are these improved, how are these affected by your injured state, legal state etc?
So rolling out Elite-Feet Space-Legs is not just changing point of view there is alot of other stuff that needs to eb taklen into account.
Doing it just for vanity sake is a waste of Dev time.
Doing it the way you describe - which I would love! Is not a simple flick a switch engagement.
So you then have to turn to the economics of the game, if Elite-feet is released it would have cost money to develop, which will require recouping from players, so a £30 DLC? £60 DLC? If they give just what you describe would you be happy, or would you then be clamouring for more? Also not everyone will buy this DLC, so will they get enough to cover the development? Hopefully...
In the mean time the main game still requires development, I would much that gets addressed first rather than the Unicorn's tears that is Elite Feet.