There is no system for dungeons to scale with player level. One of the benefits to pooling a number of these dungeons together is that it prevents a more linear structure where players move from one dungeon to the next, or feel compelled to run a certain dungeon just because they hit a specific level threshold where that's the most efficient XP earner. Heavily incremented level restrictions on dungeons also have a negative impact on players grouping with their friends and promotes a more solo-oriented playstyle because even a small gap in levels can slow progression.
Normal dungeons have the same type of level scaling and world mobs do
Oh, neat. Then I guess I don't really see the problem. Should there really be more than five dungeons on the leveling path for Legion? There's a greater emphasis placed on having these dungeons be repeatable content at cap, so why wear players out on them?
I have some bad news for you
Because the intent is to gate or deter players from just doing dungeons non-stop to level through the expansion. People shouldn't be dungeon farming to level up.
Everything.
I guess I just don't believe bouncing between dungeons should be a viable way to level, and people being able to do that negatively impacts the game by removing them from the world and dissuading them from professions and world quests. People shouldn't be locking themselves into one system that's far removed from everything else as a leveling method. It's part of what makes the leveling system for old world content so repetitive and linear.
Yeah, I'm with you in a number of ways probably. If the option is offered and players want to explore a dungeon it shouldn't feel like a waste of time. What are the right number of dungeons to introduce along the leveling path? How can discovering these dungeons and having players pushed towards them be melded with questing out in the world? Even if questing is the intended focus of leveling the dungeons should bleed into that experience occasionally and seem like they're worth running.
The dungeons are older and often an even bigger mess than the leveling content though. They are struggling to even find ways to keep casters relevant in low level group content. You go into these low level dungeons and it's rare for it to seem like there are even mechanics. You get stuck in this very repetitive combat loop that you apply to almost every pull. You pop out of the dungeon momentarily, or sometimes not at all, and find yourself thrust right back into repeating that same loop.
