It can take months to physically travel to another player (it's not so bad in the bubble, but still), which makes multiplayer difficult. There were always going to be difficulties in implementing atmospheric landings and space legs with the way the game world is, but I think the way they've done it is a bit wonky. The FPS gameplay looks supremely uninteresting, I think they should have focused more on the roleplay and exploration aspect.
On the whole it's a really great game, but no game will ever really play like a personal movie or novel.