[djs070]

The battery is replaceable, not sure that it's a big concern. I'd kill to see open documented bindings for wireless interaction, as well as the ability to write custom synth engines, but really doesn't appear to be the direction for them.

[the-rc]

This could be reverse engineered. If the Bluetooth connection is encrypted, there might be an additional step involving jailbreaking the iOS device (hard) or setting up some kind of MITM proxy. The rest shouldn't be too complicated. It sounds like TE might be working on an Android port; they just don't want to commit to it.

[emzperx]

https://github.com/hyphz/opzdoc/wiki/MIDI-Protocol