Just an idea...
I’ve heard a couple people talk about this but I don’t think I’ve seen any forum posts on it.
Basically the idea is once a quest has been either completed or fully explored we can go into it and choose to go to any node or fight on that path without using any energy but we don’t get any rewards for this. Purely for practice against certain champs or nodes like the final Ultron in 5.4. Would like to hear what others think on this and whether they’d like to see it or not!