That which you are commenting on popped up in my mind when I wrote, but I thought, "appreciate as in 'appreciate the challenge of getting troops to a safer spot'". I see that it could be interpreted the way you pointed out. English is not my first language, perhaps that has something to do with how I expressed myself.
Regarding the set time, in some missions in "R" a rapidly completed mission is vital, like when you want to encircle an enemy division before they get out or to keep up the preassure on retreating forces to prevent them from reorganizing. That is a challenge I guess I could enjoy if the circumstances were mentioned in the mission briefing.