I've played the game on and off since launch. I think the biggest difference in the game is expectations going in.

A ton has been added to the game but I still play it for the same reason, it's a good ambient exploration game where you get to fly around space but I also still stop for the same reason, it's shallow and repetitive. That was my experience at launch and that was my experience last time I played.

Based on hours played (and I enjoyed them) it was well worth the money but I don't think it's really improved that much over time. There's definitely more to do but it's not much deeper.