That would start a game of people updating a listing a bit at a time. The listing might be confusing or even meaningless part way through but after a while it w

That would start a game of people updating a listing a bit at a time. The listing might be confusing or even meaningless part way through but after a while it would be fine enough. Update API limits would make this impractical for long listings but it might work for short ones. Detecting scams and working around the detection semantics is an unending arms race.