I think it'd be great to have MIDI mappable cue points in the GUI similar to those found on the Dicers and ITCH controllers, along with an assignable 'shift-delete' button.

(I know is an XMl hack for this, but there are problems with decks 3/4: serato.com)

In the same vein, I think the temp. cue mapping could be made to work like a conventional cue on a CDJ or ITCH controller,
i.e: Set temp. cue when track is paused, and return to the temp. cue point if the track is playing.

FINALLY, it's important these mappings work with the extra decks on the SL3/SL4, since these decks are more likely to be MIDI mapped in internal mode.

Thoughts anyone?