I should add that as far as MMA is concerned and the way you've set the plectrum track there is no magic around channel 10. My memory says that you should be able to play percussion sounds on channels other than 10, but I can't find it on the net.
There are certain percussion sounds in the GM sets but these are limited. The full set of percussion sounds is only available on channel 10.
Another option would be to have a DrumType option when creating a Plectrum track (like in Solo), but I honestly don't see much use for it all
The challenge was to do this within the current possibilities of MMA.
Shout hard if you are really serious about this!
Not really. I was trying alternatives and searching for a way that is more in line with modern drum tools. Most drum tools have something tab-like, e.g.
HH Close |--7-7-7-|--7-7-7-|--7-7-7-|--7-7-7-|
HH Open |5-------|5-------|5-------|5-------|
Crash |--------|--------|--------|-------8|
Kick |9-------|9-------|9-------|9-------|
This is quite intuitive.