First of all, I wonder why everybody are hell-bent on making that a real life simulated model of a real planet. Gaming world is full of smoke and mirrors, many things can be trivialised or abstracted and other things are not as hard as we make it out to be. We do have flying simulators with varying weather effects since the '90-ties. Its just a matter of healthy dose of plausibility and immersion to make player believe he is seeing something utterly complicated while under the hood it really isn't.
Secondly, I really can't understand people who "stand in the way of progress" and want outright eradicate the atmo landings and space legs mumbling something that this is a game of flying a spaceship. Well, spaceships can land on planets, all kinds of planets and I want that aspect too. If you're unsure, go play "teh other right space game" during the free fly week(end) and see how much of depth is added by simply having legs. And I'm not talking about the FPS module - totally ignored it back then, it creates some nice possibilites for gameplay (hand over your ship or I will blast you because you come here unarmed you moron!).
That universe is much more believable and immersive while at a tech demo state than E: D currently is. Too bad it probably will be DoA under the current hype like Duke Nukem (that took) Forever. And also they ditched VR, too bad. But I digress.
I have tried a thought experiment once - to come up with a believable and engaging gameplay separately for atmo landings and space legs. The more I tried to do for atmo landings, the more I found my legs missing

. These two should come together, and I would be glad even if they were built upon release by release. Because I have first hand experienced it what EVA and on foot gameplay does to Scam Citizen. Think immersion times 10.
Then there is the "mile wide inch deep" stigma which needs to be addressed - currently in E: D "everything is optional" and "no action has a meaning". Until that changes, Elite is very similar to Scam Citizen, in that it is a set of very disconnected mechanisms whose change nothing in the overall outlook of things. Powerplay is great in organised group (or rather was great until it collapsed under 5c and general Fdev negligence), and great "battles" and victories were happening each week... only to have zero effect on the galaxy. Until that's addressed (sewing the components together to have a meaning, which currently FDev avoids like a plague) we will still get a bunch of mingames in Elite universe no matter how much "fleshed out" they will be. And while on that topic...
If (that's a big if) FDev were able to deliver meaningful gameplay loops and all these things discussed in this thread (waterworlds, earthlikes with flora and fauna) at the cost of a monthly subscription - I wouldn't hesitate and bought it. For now we have a game with schizophrenic personality, trying to be "SOLO MMO PvE PvP Carebear and Griefer Friendly and Foolproof", with a set of very disconnected, sterile mechanisms with no ties to each other whatsoever, and bogus design decisions ("You will not get commodity storage because you will hack the BGS" - lead designer Sammarco). I sincerely hope that Sammarco will "man up" after Brookes leaves for another project and then things will change, but I digress again. Currently there is no way in hell that I would buy a subscription, game is messy and they have to redeem themselves in my eyes after a year delay in executing Horizons. But if they prove that funds from subscription can make a much better game than it is now - why not? Think how much you spend on fastfood/alcohol/cigarettes/whatever fleetingly pleasures you each month, and the subscription fee will probably not look as bad anymore.