In NMS, I build small mining outposts on planets rich in valuable metals. I have a main base that acts as my exploration hub / research facility / greenhouse. I also sometimes build small observation outposts on planets with unique life, etc. Oh, and there's the new underwater bases and submarines!!!
In ED, there's a region in deep space I "own" that I'd love to set up a remote outpost at, especially if it had some sort of "Stellar Cartography" computer that allowed me to turn in exploration data, hangars to park some of my other ships, outfitting to change modules, etc. I would basically use it the way people currently are using things like that new station by Sag A.
The other reason I enjoy base-building in a game like NMS is that it gives me a whole lot of user-created content to explore. Do a search on NMS bases, and you'll see some amazing feats of architecture and clever design. I find player-added content way more interesting than the cookie-cutter stuff developers put in (seen one, seen one hundred). It would be really cool to come across player bases while out exploring in ED - I suspect they would be much more interesting than typical INARA bases, Guardian ruins, etc.
And once VR comes to NMS and I can walk around inside the bases I build.... YES!!!! But NMS is not ED. I wish it had realistic solar systems and ships and stations rather than simulating a Saturday-morning cartoon. However, I really love the base-building aspect of it, and would love, love, love to have this in ED.
I get the 'remote exploration base' thing - I'd probably do the same - but it isn't really gameplay per se. It's just facilitating you doing the same things you do at a regular station, but in a galactic location of your choosing. Great for explorers, but not really anything for the more agoraphobic Bubble-dwellers.
Subnautica and Conan Exiles (which I've been playing a lot of since v3.3) both integrate base building into progression through the game, which gives meaning to the process, but without limiting what you can do with the bases - so you get gameplay from the basic building process but also have the ability to produce those amazing constructions that you love to see. Both these games were designed with base building part of the core gameplay.
Compare that with Fallout 4, where Bethesda bolted a 'Sim City' mechanic onto an established gameplay style and the result was (for me at least) an incoherent mess where bases added nothing to the core game.
I'm afraid that with nothing more to do with a base than 'build it somewhere' that we'd end up with something much closer to Fallout 4 than to Subnautica.