I would like to see them added but with the assumption that there would be gameplay associated with them. the problem is that features which were meant to be implemented temporarily at launch with a view to altering over time as new features came in, have now been in so long that players would (somewhat justifiably) be outraged if changed now.
for example if the AFMU was suddenly significantly gimped and instead players were expected to make emergency repairs themselves via EVA in their ship , which took 5 mins as opposed to a few seconds with a button click.
or if our massive ship which currently flies with just us suddenly needed ships (NPC) crew to fly them at least optimally and these crew initially were generic poorly trained and we either had to train them up or replaced them with better experts.
both of the above features were meant to come in post release and I did want them and tbh still do, to me that is improving gameplay and was on the roadmap.
to others is pointless busywork that slows them down getting to what ever it is they want.
I remember there were loud complaints when system scanning was changed from being completely passive to somewhat active. I think it was a step in the right direction. still not what I expected at launch (I was part of a group who for months (years) before launch had been planning how to build out an explored corridor to pave the way to jumping to SAG A, it was expected to take months of not years . we expected to have to fully scan systems and then construct nav beacons before none exploration ships could easily jump to a system, continually having to return to the bubble to repair and resupply giving data to UC. the disappointment that players got there before it had even reached official release (less than 24hrs in gamma) was huge.
however I would also like to see new landable planets, Inc gas giants or massive overhaul to npcs -crew and wingmates, better more varied mission templates
bottom line I just want to see something, ANY feature expanded to justify a paid expansion rather than just new ships which are flat out upgrades to do the same things we already to or fiddling around the edges with features which really are just new UI bits and putting names to things.
colonisation is another example of something which could have been so much more imo