Eve Online would be more fun if it wasn't more about pewpewpew than anything, and then there's the lack of first person flight perspective, which takes away from it for me. Also, it's F2P, which is just begging for trouble.
I play Star Trek Online sometimes, but the ships are small, the mechanics boil down to "shoot this," and "scan that" which get very boring before long, and it too is F2P, though I think they do a nice job balancing it out.
Mass Effect has some incredible visuals, but it's about shooting stuff, and I'm more fascinated by the beautiful universe in which it is set. Seriously, the art department for that game needs high praise, but unless I want some cinematics and pewpewpew, I've got nothing to do.
Stellaris has some nice strategy/gameplay, but it's made in the same vein as so many other modern space games that eschew a first person, visceral experience. It sits along with the other modern space games that favor voxels and sprites, which is fine if you're into voxels and pixel, but none of it scratches the Elite itch one iota.
Star Conflict is another F2P set in a first person universe, and while it looks good, there's no time to appreciate it because of pewpewpew and "buy more credits."
Endless Space 2 looks incredible, and has gameplay and story out the wazoo, but it's not a first person immersive experience like Elite.
Eve: Valkyrie looks jaw droppingly fantastic, has first person perspective and everything, but it's just combat.