I'm pleased with the progress I've seen during my ten years of exposure to Arranger Keyboards. Admittedly, mostly Yamaha but I believe they will continue to make improvements in several directions. I was surprised to find the navigation from my old PSR-2000 to the PSR-S910 was relatively easy. At my age, learning curves are not something I want to plow through.
Most of my hopes are pinned on styles, multi-pads and new "voices" (instrument emulators) to give us more realism in the things we do as performers and creators.
Interesting topic and replies so far.
Dave Rice