Ron West at Cascadecarnivores is a good guy. I highly recommend his plants--especially his pings.
So far as the insect husks just let them ride. Once their nutritional soup has been reabsorbed by the plants they will drop the husks. Typically you'll get a white mold film over the insects during digestion; don't sweat it. These plants have developed in nature side by side with these organisms and have a beneficial symbiotic relationship.
I trim off dead leaves sometimes with sharp sterile clippers because I don't want to look at them, but the naturalist school of thought has some merit on the topic of dead leaves. Most plants store nutrients in their leaves and when they drain that store the leaf will die off and the plant will drop them when its ready. It is fair to say the plant knows better than we do when it does and does not get value from it's leaves. I suspect there is some degree of virtue around this. Any time you cut on your plants there is some degree of stress. Just steer clear of the crown.