The longer you take to make progress, the more your threat level creeps up.
One could build a deck with enormous amounts of Willpower, in an attempt to place a ton of progress tokens early in the game. You could finish the first quest card without much difficulty, and before your threat is high enough that enemies begin to engage. But at some point, the enemies will engage you, or else their threat in the staging area will be too great for you to keep up the placing of the progress tokens.
But assuming you want to build that sprint deck, who would you include?
Eowyn 4 WP
Glorfindel 3 WP
Aragorn 2 WP + ready for defending if needed
This deck won't work very well right now, since it is three colors. Currently, the Stone helps, since it gives WP, and gives Aragorn Spirit, and eventually you will have Song of Kings to give leadership to another hero, and Rivendel Minstrel to help get the song. Plus, Rivendel Minstrel has great Willpower for her cost.
Favor of the Lady adds WP, too.
Would this work? Or is it too dangerous to have so many exhausted heroes and allies?