We are already seeing bug snacks to buy on Amazon uk, one is called "mixed critters" with mealworms etc. :o
As far as dumpster diving goes I live in the UK in an inner city area and a while ago found men, one inside in our large street waste bins rummaging around. I don't think they were looking for food but some way to get money out of thrown out rubbish but food rummaging does happen outside restaurants at night.
Sleeping in bins does happen and binmen have to be very careful about emptying them. It's a common problem in cities.
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After playing some time with the new pack though it is quite easy to ignore all this unless you want to use such objects and foodstuffs and the game has a tendency to revert to a Neutral state too easily for those who want a sleezy neighbourhood. I've only found the trashpiles in the Eco Lifestyle world. Even without using them it's an interesting pack to play.
PS: As far as disgusting concepts go we have a childrens' TV series in the UK called "Horrible Histories" which children absolutely love, nasty little creatures!