Is there a feature request section and if not I think it would be a good idea.There is on some other forums I subscribe to.
As already mentioned in some other posts in the small Midi editor a double click to insert or delete a note would make things much easier.
Also in said editor a,"Right click" context menu when in the actual editor box with all the available drum sounds being used would make editing much faster and easier as it would not require moving focus from the work area.This doesn't need the auditioning of sounds,just a list so you can pick a sound.