Maybe that's entirely (and most likely) my fault, but there's a very limited support (if none at all) for things like quintuplets or septuplets (yes, they are used in electric guitar music), and the whole duration change interface looks too simple. I either coudn't find it, or it doesn't really exist. For example, to add a dot to a note or to make it a triplet, one needs to access the menu and search for it there. I use hotkeys myself, so it's not a big problem, but… Also there's a wrong input method used for keyboard. None of the hotkeys work in non-latin layouts, so I think the score editor receives chars instead of key press events. That's not the way it should be done.