So how do you propose they help new players?

Free skip potions will be like throwing someone into the deep end who doesn't know how to swim, leveling dungeons are far harsher than any end game dungeons and the potion will still force players to level at least 10 levels going into these.

Streamline msq ok they did that with HW and it had atrocious level jumps at launch(I think there was like 4 lv56 msq quest before the Vault a lv57 dungeon) a bit of padding is good it can help flesh out things for people like me and SE can pace things out more appropriately SB is the best paced .0 for story/level pacing and it still has a few bumps (58-60 range is so fast)

I really can't think what the devs could do here they use so much story yes even from the fetch quests into other parts of the game where they expect you to know about it already that it would probably require a whole redesign of the msq for ARR that i doubt they would do anything about it. The devs are currently in the damned if they do damned if they don't scenario here and it seems the dev's vision is with the damned if they do it crowd so they probably won't bother until it truly starts to affect things later down the line.