To be fair it goes further than expectations management.
I never expected MP to have any significant place, or even to really be in the game in any meaningfull way, but according to what was being said in interviews and shown on videos I did expect:
- Factions with meaningful consequences to picking a side (right now you can friend all, and all it visibly impacts is being given a third choice in dialogues at times) and ongoing inter-faction wars with capital ships engaging each other
- Galactic Police vs Pirates, possibly gaining wingmen during some operations
- Meaningful Trade ala Frontier Elite, with trade routes between systems
- Planets orbiting around a star, planets rotating
- Worlds becoming harsher and weirder as you would get closer to the Galactic Core
- Functionning Gates, with ancient ruins mysteries (right now ruins are all about languages and if you guess a right answer a chance at getting a crafting recipe you probably already own)
- A tad more variety between worlds/ systems. One of the basic tenants was that life would be in about 10% of planets, and highly evolved life on 10% of that 10%. Well... the fuel/ repair elements are such that every.single.planet has the same base resources (Plutonium, Iron, Zinc, Heridium) and also outposts. Every single of the 18 Quintillion planets has been colonized and has outposts (some planets more sparse than others) and every single system in the universe has a space station, with 1 of 3 races.
- Giant flora and Fauna. It's supposed to be in the game, some people have found files (PC) with models that "should" be giant, but in almost 2 months I have not seen 1 report of a giant creature.
I do like the game a lot for many reasons (chill space flight, some gorgeous landscapes/ lighting, music...) but it honestly fell quite a bit short of what was presented during 2014/ 2015 imo.