Contributing with the WordPress Community has been a really pleasing experience I have had as a designer. People here is just awesome.
We have been exploring and working in some ideas to improve the Media Manager, thinking in terms of desktop and mobile. Mobile internet usage is increasing year after year, an looking for a solution that make working in that platform an incredible experience is a must. Following the Mobile First philosophy can lead you to simpler solutions or at least will make you keep an eye in the hierarchy of the UI.
In the process we used InvisionApp for the first wireframes comps, giving some paths to follow, and getting feedback from the community. It’s a great tool and, with the recent acquisition of Craft, I am sure it will become a great tool to use with Sketch.
Personas, Wireframes, Prototyping and all the tools we used in the process can be found at make.wordpress.org. Here is the link: https://make.wordpress.org/design/tag/image-flow/