Quote Originally Posted by Taei View Post
Why is vertical progression so important? I really don't understand the argument, maybe someone can enlighten me.
It's an addiction inducing method, that ensures subscription funds through habit-forming daily content grind. Korean MMOs perfected it years ago, and SE are copy-pasting the structure, which is known to work. They only have so much development time, and horizontal progression doesn't ensure engagement in the same way.