If you could design 1 game update from the ground up, what would you do?

Optimization update. What better way to enjoy the game than to not wait around 30 minutes or more counting slow loading, disconnections, and crashes? Not to mention event hell lag, crippling FPS loot/kill lag, and bad design like events that interfere with goals within the game like elite monsters not being able to be registered on the collection if elite replacements exist as an event.

At this moment, playing the game in this state feels more like a chore, and the Nexon Launcher made it EVEN worse.