I agree with the above comments, im not saying you should never use shallower DOF, heck it helps when your on a budget. But there are these weird techniques I see sometimes where even the subjects face is barely in focus... then again these are just my personal tastes, I do also enjoy shallow DOF, but sometimes I dont see the point of it, its ok to let the viewer's eye wonder in my opinion. To me closeups are perfectly fine for this technique because you're suppose to see the subject and focus on him/her only, Whats weird is when its a shot that doesnt need it at all or when used with run and gun, then there are some that are crazy like shooting 1.4 during a chase sequence.
Im not saying you should never use it, heck i know I will, but its good to know when it has an actual effect to the scene, then being saturated with constant shallow DOF, which can be exhausting at times and can lose its effect when you purposely 'do want to' use it.
To me the the main things that are on my mind when Im shooting is composition, lighting, and what is necessarily to the narrative. To me lighting is so important, its something that I always strive to improve on (probably because im terrible at it haha) because thats usually what gives away the illusion to the audience, in my opinion. It sometimes makes a location feel more like a set then it is a location.