I think it comes down to exploration.
What I mean by this is that Freelancer incorporates the ring tunnel system to allow you to quickly travel between points of interest - you can easily go from one planet to another by traveling in these tunnels. What was amazing about this is that at any time you could "leave" the tunnel and go off on your own. It felt like it was something you shouldn't really do, but if you did it, and you went far enough out where there wasn't much civilization, you could encounter stuff like a wormhole by chance and suddenly end up in a completely different solar system.
That exploration is what is missing in Everspace 2 in my opinion. Everything in Everspace 2 boils down to these small areas that you fast travel in-between.
It's like if you took the original Legend of Zelda and just had fast travel between the underground dungeons without the over-world exploration. At least that's how I see it.
