I would like to suggest you an improving of the left part of the main screen. I wish - maybe one day - that you can modify the management of collections, presets, etc...
When you have a lot of Presets and Collections, and we need to switch between them asap, it's very difficult to scroll all of the list (...the scrollbar is also on the left ! Strange idea...)
The best idea will be to redraw the actual design : in that case, the title bar and their "contextual menu" still always visible.
A simple mouse clic would allow to uncollapse Collection or Presets lists very quickly on the top. All titles won't be never hidden.
Please, take a look at my screen capture (my suggestion) for a better explanation.
Europe, Middle East and Africa