One thing I'm not expecting is any significant improvement to the audio loops. As I've said, there is FAR too much well integrated, carefully thought out work with using carefully crafted MIDI guitar patterns to replace chords like sus, dim and aug, and all the work on adding extensions to it for it to be ANY kind of 'beta' stopgap.
This has the hallmark of a completed feature. Sadly.
Other issues like the Piano mode not working, and no doubt a plethora of other unreported (because no-one but Ketron employees have played it much yet) bugs and other issues are what they are working feverishly to finish, I would imagine.
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An arranger is just a tool. What matters is what you build with it..!