I like this idea and would like to suggest the following fleshing out.
Garbage cans, not dumpsters, placed in the different malls and also on Blue.
And also instead of low level drek, actually have a chance to nab some high end goods that have been tossed out accidentally. Legitimate jewelry, Proline trench. Maybe even the random firearm that was chucked into the trash.
2 options: Rummage and Empty.
Rummage is picking through the trash. You don't necessarily go insta-dirty but hitting the Quickclean after may be a good idea. Anyone can do this, including corpies who don't care about their image of picking through the trash like a Mixer. Also going to point out that someone rummaging through the trash in the middle of the mall most certainly qualifies as disturbing the peace so may result in a visit from a nearby Judge. Which is a pretty hefty risk, hence why I suggest a higher reward. I would think that maybe like a 2% chance of finding something.
Other command would be empty. It generates a garbage bag that can be carried to an incinerator. However the bag can also be cut open with a cutting device. If this is done then it explodes in garbage, but also possible loot too. Maybe simulated 50 rummages with everything going on the floor. Essentially "trashing" a room and requiring someone to come along and pick up all the garbage on the floor. While this would be a super dick move, it should not happen that much if WCS keeps up on the garbage emptying duties. And yeah it would be a little unfair to just hand WCS workers a bag
Also trash cans on Blue would mean that WCS on Blue wouldn't be considered out of place automatically. It plays into the other post talking about how janitors and sanitation workers should have more access to places. While yes WCS are Mixers they would have a legitimate reason to be on Blue. This would allow them to possibly act as scouts in a city where a functioning map of Blue's layout could be considered paydata.
Also some contacts, a wig, and a stolen WCS uniform and voila you're a ninja in the traditional kabuki theater.
Just some ideas.