It would be extremely useful to add drag and drop functionality to the Sampler instrument in Studio view. When first using Spark 2, I assumed that's how it would work. I don't like to have to open a file browser there for each sample - it is more efficient to open my samples folder in my OS, audition samples, and drag and drop. As a slow workaround to build a kit, I switch back and forth to the Main view and drag and drop there, but it is a bit time consuming.