Not much, at least not in Battlefield (although I can imagine it in some other game). What I meant is that any game doesn't need to include anything just because there is some demand for it, if such demand doesn't fit a creative vision and is not coherent with it. Doesn't matter too much if that demand is made by players just because they can or is dictated by some social movement and atmosphere. Technology and so on is a nice thing, but just because the game creators can do something doesn't necessarily mean they should. 😉
Well, in that regard we can also mention stuff like smart bullets, which is a real thing today, a system that was tested a few years ago and there is an expectation it may be even better in the future. There can be imagined many things that may fit the time period, but once again - because it fits the future doesn't necessarily mean it should be in the game. 😉
