Irin S56 -digital saxaphone/EWI - basics and making it a much better instrument

The Irin S56 digital saxaphone/EWI comes from China - and probably because of it's low cost, nobody else has posted anything about it - which is a shame.
It has good points - it's looks great, it's inexpensive, the MIDI works really well and about half of the voices are great. There are issues, however - and I point these out and show how I fixed them.
Irin and/or the original manufacturer (Konix...?) - pay attention - and please fix these issues; this could be a great instrument if you put some more effort into getting the design right - can't wait to see the next version!