Any little thing you see during preflight, write it up. "I think that screw is 1/4 turn loose, better write it up". "That tire might be low." "Is that bug splatter or a bird strike?"...etc. Or, if there is a cloud you better deviate, you don't want to upset any passengers. Oh, and be sure to slow down to Vra or less just incase you find any turbulance.

That would really slow operations down.