Got rid of the post that this was because it was incoherent and a waste of space.
Anyways, I would argue that since the tropes that everyone find disgusting do in fact exist outside of porn, they should remain. What should be altered is the disturbingly descriptive examples given. Even the naughty tentacles should remain, since they are a sup-trope of Freudianism (I place it with gun and blade fetishism, Oedipus and Electra Complex's etc) in that they all represent a subconscious sexual deviance, the objects in question all being phallus' and vaginas and are a display of sexual dominance.
The more offensive ones about "Rape Is Funny/Okay If" are in fact valid, as they do exist. You can find many examples in Seth MacFarlane's work. Also, I remember a scene where the villain was rape. The movie was undoubtably going for the angle that this was a moral retribution. It is a valid trope and should therefore be preserved.
About Loli and all that crap, they're tropes as well. We wouldn't like to acknowledge it, we wish they weren't, but they are.
Incidentally, about innocent undergarments, the trope is that the possibility of sexual innuendo and/or stimulation (a child being carried by the hindquarters being the best example) is nulled by the image of innocence. The fact that these people are sexually stimulated by something specifically designed to not be sexually stimulating is not the fault of the trope. That is due to the fact that these people exist. That is an issue solely with the community and not the content.