From what I read, and what I think happen is that the steam version is a content and mechanic overhaul for the NA/EU version. Everything they do from the first day of founders and cash shop release seemed sketchy. I think people overhyped the game and expectancy of the game are way off. I think I remember posting way earlier in chaos post saying don't hype or expect too much because neowiz is the publisher.
I think that depends on what content you are looking for. Though, I think leveling is quite easy but they might have made some changes to dungeons because level 30 dungeon is not solo-able or that they skipped the level 30's content and focused on leveling to attempt to get to end game content. Either way I suggest to not buy the game if people are expecting this to be complete. But if you want to play and see as things comes out and change that's is worth it. In the end some will agree the core of the game is pretty fun. Just it's not complete or have the content of the other version published by other people.
