That’s another argument for having crafting, but not quests yet. Quests take more time to be designed and put in the game, crafting on the other side needs more time for testing.
If you want we can make a bet what this is and when the game is released we’ll see who was right?
RoS, yea.
In Vanilla you had to collect or buy Potions 
Also.
Going up and down, was already shown in the D3 Alpha with a Ladder, same with jumping over a Cliff.
But back to Potions ^^
Im still wondering, if we will get also some
Could be kinda Fun und would be def. worth the extra Time collecting the Mats.
Yeah but to be fair it wasn’t as impressive, the ladders were just substitutes for stairs in dungeons. We’re seeing something new in D4 with large outside environments having a very vertical feel to them. It’s something I haven’t seen yet for sure.