Increased range route plotter 1.1
Double reward for scanning 1.2
Possibly the debug cam 1.2
I think that's it.
While serious issues like CMDRs losing all their data after a game misconduct destroys their vessel remains addressed, although it seems to be in the works to be able to recover that data. So that'll probably be the 1.4 update.
The route planner (as well as the ADS), actually removes any satisfaction in exploration, as it's no longer necessary to 'pick your way' from system to system, sometimes backtracking because you've reached a dead-end. The RP is fine for populated space though, and works well when trying to get to a certain area quickly, but I'd hardly call it something that benefits exploration (unless you like your exploration to be dull and grindy).
Double reward for scanning was a quick and easy attempt to pacify players who thought exploration was another route to untold riches, and were disappointed with the poor monetary returns. Personally, I was drawn to exploration for the satisfaction of achieving something meaningful. I mean, 'double rewards?' Isn't that that a simple matter of adding x2 to an algorithm?
The debug cam was always in the game, it was just hidden from players, and was something originally put in for the devs (the clue is in the name). Making it useable by players was just a matter of exposing this functionality, and eventually tweaking it to get rid of the clipping issue.
Not mentioned above, but 'First Discovered tag' is hardly a major addition, just something to appease those that wanted some sort of glory by having their name written onto the game. Not that this 'glory' actually means anything. When I was exploring and I looked at the system map, my brain only registered the presence of any tags, not the name associated with them. If I saw one, it was just a cue to grind-onwards and not bother with this particular system.
Why not just have the "BUBBLE" then and get rid of the galaxy all together?
Actually my preference would have been to KEEP the bubble going into Gamma/Release. Just make it invisible, with all systems outside the bubble greyed out, to indicate that no route to them is currently possible. Players would have thern been restricted to a 'mere' 15,000 populated systems, and FD would have had the breathing room to implement something deeper when time/resources permit (such as a Stellar Scanner being 'invented' to allow triangulation of those systems, used by explorers to open up new systems one-by-one).