Going from Qeynos to Freeport, or crossing the ocean on a boat felt absolutely epic and dangerous. It was wonderful, but not something I would want to play today now that I have real life obligations.
In my mind back then, I was in awe of people that even had the knowledge of how to get across certain zones safely. You know it took effort/skill for them to gain that knowledge. You couldn't just look it up.
I've been thinking how you could possibly replicate a similar thing nowadays, but unless the world constantly randomly changes over time, rendering any created guides/maps/etc moot, I think that window has closed.
At this point, even if a good MMO were to come out (incredibly, this has not happened for close on two decades), recreating that experience is entirely on the player. It's on the player to forgo looking things up, or to forgo using external tools to chat, find groups, trade items, calculate strategies, etc. But since players doing that will be at a disadvantage, that is unlikely to happen in an online game...