Need ability to have two independent Staff-s playing simulatenously

[klesun]

1. Drums - they require copy-pasting.
2. I see no better option when two instruments play same note.

Actually would be nice if the second Staff was switchable, i.e. "Show violin in a separate Staff". If only you had a working algorithm, how to merge two Staff-s without mess and removing redundant pauses after splitting...

[klesun]

Or at least make the notes of both instruments visible when they clash.

[klesun]

Or, the best solution - mark some channel to draw it's notes one octave lower/upper than they actually are.
Upd.: nah, this is not a solution, they whatever intersect in another place