TorgoTheWhite
Explorer
To me, wasting spell slots on all this ticky-tacky pre-scouting conditions is a risky proposition... It is not "intelligence" of the monsters you should be concerned about as much as the unpredictability. I guess you can have players that love their Rube Goldberg setups though. 
The spell has been impactful in my game for avoiding exhaustion levels, and to speed up the whole "nightwatch" conversation. Fortunately my players avoid using it as a
 combat spell. My players wouldn't waste their time perfectly setting up a spell with a 1 minute casting time on a variable importance encounter (which could be a social encounter that you now prep-burned a spell on)... and full rest is SUPER Important in my game.Punishment for frivolous use would come later in the grind when I give no obvious breakpoints and it would be nice to cast that one spell for the thing it is more intended for
				
			The spell has been impactful in my game for avoiding exhaustion levels, and to speed up the whole "nightwatch" conversation. Fortunately my players avoid using it as a