I have a report on Rosegarden's score editor from a russian user. I
hope you can find something to answer :)
Here is just a translation
1. The left set of toolbars is overloaded with things that are rarely
used or not used at all. For example, one wouldn't need separate
dotted rests and notes. A dot is an obvious modificator that
shouldn't be duplicated for each note and rest. There should be double
and triple dots also that are currently missing.
2. It's not clear why there are double-sharp and double flat buttons
as standalone entities. it's also not clear why there is a note in
3. Durations less than 1/32 and more than 2 are rarely used.
4. It would be great if toolbars could be better customized (i.e. any
button at all could be removed or added).