I'd like to see Korg's '2 styles at a time' adopted by ALL arrangers! Plus Roland's 'Pianist 2' chord recognition (3 notes pedal up, 5 notes pedal down) which revolutionizes chord recognition when you play pianistically.

Both utter game changers...

Beyond that, be nice to have '1/2 time, double-time options' for a lot of styles. And more recognition of YOUR playing intensity to control the style parts. Play harder, style gets more complex, etc...

With AI coming along, be nice to have an arranger that would listen to you play a couple of bars (or 4!) and suggest styles that might compliment the groove...

We seeing a trend? Today's technology needs to be set to listen to US, and assist us achieve OUR vision. Too often the arranger tells us what to do! Time the shoe was on the other foot... 🎹😎🤩