Changing people's attitudes towards arrangers is a daunting task.
In Yamaha's case,these instruments are designed and sold primarily with the hobbyist in mind.The Tyros is simply an enhanced PSR...it lacks true pro features like balanced line outs,expandability etc.The PSR-9000 pro was the only exception.
Approaching Elton John or Billy Joel or any other keyboard celebrity won't make any difference...they wouldn't be caught dead using one.
Piano players usually resist using an arranger as they need to learn a new and different method for left hand chording.Not very many players want to sacrifice a left hand technique that took them years to develop to have to learn another one so that they can use an arranger.Former organ players have less of a learning curve.
The only real difference between the "arranger" and the "workstation" is the auto-accompaniment...otherwise they have similar features...some workstations now feature phrase recording,using preset licks much like style parts in auto-accompaniment,so the line is blurring somewhat.
Arrangers need a serious revamp in "user style creation"...most players find it too difficult, or the scope of creating a user style is too narrow. It should be easy to make a midi into a style,without the use of external software...some Casio arrangers had this feature....it should be on all arrangers and it should be very easy to use.
Screen information could be further improved for style creation as well....and in the case of Yamaha mega voices...it should be easier to revoice parts that use these voices....a lot sound poor when a non mega is used...SA voices will further compound this problem.
The 61-note versus 76/88-note debate could easily be solved by offering the arranger as a module that could be attached to optional keyboards of varying sizes made to use with it.Simple?
....probably too simple.
Ian