Not really. The FSS already told you everything in detail there is to know about the entire system. There is no point in going further, unless you really want to see the same geysers for the 500th time.
Apart from exploring stuff like surface POIs.
At this point I really have no idea what people actually want. More surface POIs? Seem like their number constantly increased over the last years.
Or do you want more pseudo "scientific" scanners and mechanics to find and investigate the POIs? That would mean more mini games like the FSS and with all the complaining about it we aren't really encouraging Frontier to add similar mechanics...
If the focus is shifted to POIs, then the number of POIs needs to be, in both abundance and especially variety, much much larger than it is now. And not only that, there needs to be things to do, not just see.
Like I said to another forum member, there isn't even a reason after all this time to land on a planet from an exploration perspective.
And POIs don't need to be all "special", it can be things to mine (using the SRV (or some other land vehicle), things to collect for research (deliver back to some station, or even one of those scientific installations, if they were to have landing pads), etc etc.
But the amount of POIs and their variety needs to be much larger. This is the kind of stuff RNG should be used for, for variety. The game uses so much RNG, but rarely for the things which would benefit the most from it. Even stations and planetary ports would benefit from some RNG, but this is a whole different matter.
I don't like NMS as a whole, don't like their "style", but the truth is, there is more gameplay and exploration in one of their tiny planets, than in ED's entire galaxy. We don't need to go from one extreme "almost nothing to find and nothing to do) to the other (bazillion things to do and stuff to find all around), but right now it's very poor.
In my opinion exploration is nowhere feature complete
With this I agree, in fact I feel it hasn't even started yet, but I doubt we'll see much more. Just look at how they're struggling just to show that there are a few fumaroles on a planet. I doubt the game has been planned from the start to have any exploration gameplay other than locating some planets and moons.
PS
By the way, while you want to spend hours in a system the most vocal part of the exploration community is already annoyed by the 30 seconds it takes to use the FSS.
For credit farmers everything will always take too long. For I doubt taking input from people who only want to see a number change will result in a good game. Ironically, credit farmers are the ones who benefit the most from the current state of "exploration".