Certainly ease of use is also very important. Yamaha in particular seems to be lagging behind in that aspect .

Again I'm always a bit frustrated about pretty much any workstation having some obvious dumb and annoying shortcoming or flaw be that in it's ease of operation or it's technology and features .

Surely it can't be that hard to fix these problems ?

Well the Korg Pa1x Pro is an arranger is it not ?