As you all know, the game came out 8 months and a week and maybe a day or two ago.
Let us use this anniversary to think back to what we had and is gone now
1. Rare trade piracy.
With the sales price nerf for stolen rares, rare piracy is pretty much gone for good. Many argued that it's "realistic" this way, but on the other hand we can look at any random BB and find missions to steal regular commodities worth maybe 10-20k and get paid a quarter of a million for doing so.
2. High bounty player pirates
Some of the more successful pirates who went weeks without being shot down managed to accumulate multiple millions worth of bounties. When players started showing up with 10 millions on them on the wanted boards, other players actually bothered organizing and hunting them because the money was actually worth the effort.
Today we have no roaming on bounties, so player pirates accumulate a few thousand credits only before they move system, and after a week those bounties disappear anyways. There are no pirates anymore that would be worth millions if killed.
3. Pirates actually in it for the money.
There was a good chance when you were interdicted in your trader that the pirate would actually let you go after dropping him some cargo. Now it's just open fire to kill, because they're already rich beyond need. The game has become a whole lot more hostile, especially since the crime updates in which Frontier made it clear that piling up hundreds upon hundreds of player kills is no big deal.
4. Rare trading
Nerfed and then forgotten, rare trading after the mission update is no longer a good way to make money. Maybe it's time FD rethink their massive nerfs on rare trading again, because it is one of the most fun ways to trade. I really liked doing rare trading even in a Clipper because it was an activity that actually took over an hour to complete, there are by far not enough activities like this in the game right now. Everything else is so instant gratification
Can anyone think of any other emergent gameplay that has been shot down since launch? Don't say seeking luxuries.