There's one feature in the Roland Guitar Mode that I think is VERY good, and could be copied by many others, to help get better guitar voicings....

The higher up in the Chord Recognition area you play in, the higher the inversion of the guitar chord played. It's freakin' scary, sometimes how this one little thing makes all the difference.

Trouble, of course, with the darn Roland Guitar Mode is that they haven't linked it to the Style section yet, you actually have to PLAY the trigger notes as well as just the chord, which makes it useless in a style. Bloody Roland... so many good ideas, so little clue about what they are

They've DROPPED more good, practical, MUSICAL features in the last ten years than they have added. I guess they listen to customer feedback too much, instead of MUSICIANS...
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An arranger is just a tool. What matters is what you build with it..!