There are two things that were either not mentioned or were mentioned ever so little: No class-base structure (i.e. no pigeonholing) and the economy is player based.

The no classes structure is what I love about EVE. Players don't get stuck with being just a tank, just a DPS, just a healer, or just a crafter like in other MMO games. Yes, starting out is specified on the focused path of choice, but at any time it can be changed simply by learning different skills. And, players can learn all skills. No more of "Oh, I would have won if it wasn't for him having X ability which is so OP.", and that's because every player can have X ability when they want to.

The economy as far as I understood it is almost completely 95% player based. Sure, there's the basic skill books that are sold by NPCs (only at specific stations) and the items received from missions but everything else is player controlled. Player ships are crafted by other players, the materials to make said ships is mined by players, the mined materials are either refined by the same miners or they're refined by others (people with higher refining skills), when ships are destroyed there are players that salvage those ships for valuable materials. I guess it's mostly based around the fact that ships can be destroyed and need to be replaced, unlike other games where the PvP there is no lose or any things like that.