Plugin Requested

If anybody has skills and time to add the one or the other plugin, that helps to ease poor little arranger's life I would be very grateful. Here some things I was looking for, but could not find a solution:

• Copy text from one stave to another
• cut or copy selected lyrics as blank separated text string to the clipboard (which is the inverse of inserting text, solves problem 1)
• Combine single-line Percussion instruments to a 5 line drum part
• Exchange voices only for selected bars (urgently needed)

and some other things I cant remember at the moment.