All brands of arrangers are just computers with plastic piano keys. They are just a series of integrated software modules with thoughtful ergonomics (physical controls, touch screen, etc.) as secondary considerations.

I would love to see Roland make another high-end arranger. But they won't get my money with a subscription model. Sorry! I'll play my BK-9, or even the next TOTL Casio until I'm old and dead.

If the Integra-7 has MIDI jacks, at least I can envision how I would integrate that, or a Ketron SD4, or even an ancient QY-70 into my setup. I'm sure the cloud library is great. But everything Fran mentioned is unfamiliar territory for me. I'm still viewing MIDI files in XG-Works, because every time I try to open them Ableton I have a hard time getting them to play!