@andy > 1. I noticed that too, but you can still do it through the software with mouse / keyboard, reassign a button on the unit, or add another MIDI device.
2. The IN and OUT buttons double as 1/2 and 2X buttons once the loop is engaged. I'm sure that can be changed in settings, or perhaps, like a CDJ, holding it will force it to 8 beats.
3. Yes, I know what you mean, they are removed, but that information may be visible in the display.
4. No - that's meant for "key play" to allow you to manipulate a hot cue as if you were playing it in a keyboard (music, not computer).