This is the most important feature SL needs to get. I mostly spin dance music and i make 'on-the-fly' short edits to my tracks, since dance songs are usually 6+ minutes long (too long for the dance-floor in my opinion), i will cut it in half by jumping to the second breakdown after the first buildup. So i have my cue point at the second breakdown and i hit it on the fly after the first buildup and of course with the possibility of human error or software delay, it could be a few milliseconds off and either sound bad, or go a bit off beat if you have another track playing in the background on the other deck. So there should be a 'Quantize' feature like Pioneer has that will beat-lock your track so even if you press a cue point a bit early or late it will stay on beat still and your transition will be flawless.