Spec's out more like a stripped down GW-8 in a module format.
Still no MOTL or TOTL arranger gear. Roland have gone low end, bigtime.
Things like this, no fully featured sequencer on board (mind you, still not sure why anyone in the 21st century wants an onboard for anything other than playback or simple editing).
If the GW-8 or Prelude don't already float your boat, I doubt this (unless it's the form factor alone) will...
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An arranger is just a tool. What matters is what you build with it..!