The rubbish-collecting game I’d most want is a walking simulator about David Sedaris’s litter-picking, plucking Coke cans and chocolate wrappers from the bushes of procedurally-generated country lanes with the writer while he tells anecdotes. Procedural anecdotes, if possible.
I do also have half an eye on Cityconomy [official site], an open-world simfest game coming in December with many important jobs that keep a modern city running, from cutting grass to collecting the rubbish. You will get to drive trucks made by a German company named MAN. And it has co-op.