Needless to say, is a fantastic program. My humble suggestions are as follows.

A Randomize similar to that of FL Studio will give you more versatility to fast and some accompaniments editable. (Do not confuse with the arpeggiator).

The possibility of changing to see the notes in the Piano Roll. It will be very useful for those who fall between the notes on the keyboard like me, especially when play bass and we lose forming some chords

Finally, one detail: somewhere than display the time elapsed.

Thanks and greetings!