One thing I have thought about, is how some gigs are removed entirely, while others are simply delisted. While removing entirely makes sense when it comes to gigs about Facebook likes, or academic work, other gigs should probably not be removed entirely, like sign holding gigs.
They could allow these otherwise harmless gigs to stay on the site, but force the person who made the gig to get traffic from social media and other places, which can circumvent the problem of people having their gigs removed for otherwise no reason. This can also allow the seller, who didn’t do anything else wrong, to continue making themselves and Fiverr money.
This seems to help Fiverr, as it takes the gigs out of their promoted editorial process.
But it also helps the sellers, who are still able to make money off of the gig.