In terms of features they might be able to add via firmware, what I want most is some way to select the range of the arp. (I realize this would best be done with an extra knob with detents, or with extra buttons, but maybe Shift+Rate or some button combination could be used.) Perhaps someone can tell me what I'm missing, but it seems to me that the current way of inputting some notes, then shifting the keyboard range, then inputting more notes, makes the arp useless in a live setting if you want 3-octave arps, especially if you want to be able to arpeggiate a chord progression. If I need a multi-octave arp with different notes in each octave, I can always use the sequencer; however, there is no substitute for being able to hit a chord with one hand and having it instantly play across 3 octaves. I think it was a mistake to favor complexity over live usability.
Otherwise, I can think of many other things I would love to have, but they probably would be better implemented in a KeyStep Pro:
- 37 full-size keys (or at least, keys that are longer than what is currently on the KeyStep, and at least as wide)
- Lights to indicate the Mod strip "position"
- More save slots
- Some kind of display and encoder combo to access saved sequences, see the current tempo, access features currently only accessible thru MIDI Control Center, etc.
- A second sequencer with its own time division control
- Sequence chaining (and the ability to save them, of course)
- Separate Mod/Velocity/Aftertouch CV outputs
- Sequencing of Pitch/Mod strips, Velocity, and Aftertouch
- Step buttons (if 64 buttons won't fit, then 32 with a 1-32/33-64 selector) for seeing which step is active, which steps contain data, muting steps, and changing sequence length on the fly (or even selecting saved sequences)
- USB-B or C port instead of whatever the KeyStep currently has
