Travel, compared with the previous games, is really quick. Jump, scoop, jump, scoop, travel thousands of LY an hour in a fast ship. Cross the bubble in ten minutes in a ship that's still got enough equipment aboard to do stuff too.
In the original Elite, it would have taken several hours to get from one side of the map to the other - 100 LY or so. In FE2/FFE, long range travel was slowed by the need to travel in-system to fuel scoop, carefully brake to avoid fatally ramming the gas giant (or star!), and carry on. Obviously, with an entire galaxy out there, being able to travel more than 100 LY a day is necessary. Even within the bubble, gameplay often requires being able to move around it fairly quickly.
However, this does mean that while in Elite or FE2/FFE you might see the hyperspace loading screen once every fifteen minutes, if that (and it was a shorter screen then, too) ... in Elite Dangerous if you're travelling [1] you see it a lot more frequently, so the fact that it takes a non-trivial amount of time adds up. Not much that can be done about this except optimising the loading screen further (which I'm sure is going on) or making people spend more time in-system so they see it less often (which wouldn't be popular)
The problem is, this mostly consists of being able to take your hands off the controls. Line up for the hyperspace jump, engage drive, you now - assuming you're not actually being shot at, which is rare - have nothing to do for ~30 seconds. Drop out at the destination, brief bit of interaction getting clear of the star, line up to the destination station and set full throttle. No further input needed for 2 minutes. Then at the end deceleration out of supercruise is great - hands on the controls, careful flying and use of gravity wells to optimise the approach, drop, fly in to the destination station, dock, do stuff. But the straight-line bit to get there makes it a very choppy experience.
This isn't about it being quick-fix arcade action. This is about being able to take your hands off the controls entirely because there's literally nothing useful to do.
A couple of other games I've been playing recently: Morrowind, and OpenTTD. Neither of them much like Elite Dangerous, certainly neither of them quick fix arcade action games. Both of them, like ED, are games where you sometimes just take a break, and look around. Neither are games where you spend lots of time where the optimal action is to take your hands off the controls and read the forums.
In Morrowind, if you want to get from A to B, you need to have the game window focused and be pressing the walk forward key, with consideration given to the left and right turn keys. No fast travel, no instant gratification, you want to get there you need to walk ... but you do actually have to do something to get there. And things might happen along the way, or they might not.
In OpenTTD, once your network gets above a certain (small) size, you're always going to have things you can do to improve on it - adding extra goods trains, adjusting passenger routes for better distribution, fixing signalling to make lines more efficient, building extra stations to get more passengers travelling out of growing cities, upgrading your vehicles, etc. Unless you turn the settings up to "really harsh", the economy is relaxed enough you usually don't have to urgently do any of that - you can set follow mode on a long-distance train and just watch it journey across the map, or spend some time admiring the traffic through your major hub station - but there's always something you can be doing as well.
The problem with Elite Dangerous is that if you're travelling from A to B, initial alignment and final approach aside, all you can do is admire the vastness of space. And it's great that that's an option. But it doesn't get any more vast or admirable the 100th time. In theory you need to avoid interdictions (at least in inhabited systems) ... in practice, there's no time for anyone to interdict in intermediate systems, and the supercruise speed curve means that you're pretty safe in the middle of your journey anyway.
This wasn't a problem in Elite, FE2 or FFE because generally even when flying in a straight line on autopilot you were still at risk of being attacked. And especially in FE2/FFE the optimal way to fly in for speed didn't use the autopilot much - you'd use manual thrust to control your speed (hands on controls, pay attention to velocity vector and approach distance)
Fixing this up is trickier, I think. I don't like the idea of mini-games, or anything that means you can't just drift along in supercruise admiring the sights if that's what you want to do. But there needs to be some incentive where you get an advantage from being in-game and using the controls.
Maybe just as simple as being able to press the boost button to increase supercruise speed and acceleration. Maybe something fancier where you can open a comms window and do some business remotely like check station mission boards and accept missions or read local news articles, so when you get there you're rewarded by everything being lined up and ready for you. But something to do other than wait a couple of minutes to start the final approach.
[1] I definitely mean travelling here. If I'm exploring, even if it's just "as an aside" exploration of previously unvisited systems while travelling, then opening the FSS, tuning around for a few minutes, then deciding there's nothing I want to investigate further and moving on, is enough of a break that the loading screen is less annoying.