Everithing seems so good but there are few things I think we can improve:
Loop lenght indicator has to be more visible (different colour or maybe Bold font)
When track is loaded and you scratch after you release your fingers from the jog the track returns to its start point or selected cue point (some sort of jog wheel lock I don't like so much)
Flanger colour fx on DDJ-SZ is a little bit too strong
- (less important) - HOT CUES behavior are like CDJ2000. If you press a hotcue button the track starts playing. I like the to function like the cue button, when you release it the track returns to the selected hotcue point. Maybe put something to choose our preferred behaviour in setup menu.