I have the Lightroom app for my Chromebook app and I'm doing the 30 day free trial of the upgraded version. It still lacks a few things from the desktop version that I hope will get added: size adjustments for the brush tool and eraser (much needed), Automask would be very helpful as well. On the linear gradient, when using the eraser, it would be helpful to still see the mask showing where the gradient is applied so you can see what you're erasing. Again, a size adjustment on the eraser here as well. For adjusting whites and blacks, I know on the desk top version you can hold shift and double click the whites/blacks slider and it automatically maximizes them for you. That would be extremely helpful on the app. Keyboard shortcuts would be nice as well, like O, M, [ and ], etc.