It would be nice...when I got a similar discussion going a few years ago it was pointed out...on the Arrangers the content is a lot of what you pay for, while on PRO synth's it is the sounds, programmability, MIDI flexability, Sequencers and features to do the Pro (Daw etc) stuff for pro musicians in a band or production environment.
Also, some very knowledgeable people indicated the Mfg like Yamaha have internal wars going on to protect the lines between Home instruments and the PRO workstations (divisions), so stuff gets left out purposely to keep the peace.
Lee