In a video posted on Reddit by u/samasaurus6, they showed off their idea for a Moira passive ability by using the PTR Workshop. They made it possible for Moira to heal more than her maximum healing capacity by sacrificing her own health. You can see the concept in action in the Overwatch clip below.
Many devoted Overwatch players like this one have begun using the new options in the Workshop to make small improvements to various heroes. A well-known example is Project Overwatch, a workshop mode that tries to make heroes more similar to the lore and more intuitive to play. We posted about their Winston ledge grab concept recently.
The Overwatch Workshop on the PTR gets regular updates and expansions to what is possible. Most recently, player size customization was added. Fans use the Workshop to create fun and exciting game modes as well as put their own ideas out there in hopes of improving Overwatch in some way. Any player that hasn't explored the wild world of Workshop modes should check out the Orisa rollercoaster.