I've written this in a private message and thought it was nice to share.

I've organized my ITCH library in a consistent way, so I can mix and remix "on the fly" more easily without having to remember everything for every song.

cue 1 --> mix in point (usually a 8 bars intro, but it depends on the song, sometimes it's 16 or even 32 bars)
cue 2 --> usually, where the "juice" of the song starts (i.e. the singer begins to sing, or a synthesizer riff kicks in)
cue 3 --> "exit" section: usually drums, or drums+bass (much better for live remixing)
cue 4. 5 --> other "points of interest" inside the song, i.e. points for scratches, or for cut-mix, or other remix-friendly points

the most important cue points are 1-2-3, because this way I keep the VCI-300 compatibility (the NS7 has 5 cue points while the VCI only 3)

real world usage: I load a song, skip immediately to cue 1, beatmatch, mix in. In the middle of the song I load an acappella on the other deck, activate cue 3 (or 4 or 5) to create a music "bed" for the acappella, kick the acappella in and do the dirty job, then activate cue point 2 to create a "verse-chorus" editing on the fly. When I'm done with the song, or if people don't like the song too much, I use cue point 3 to cut it. Usually I prepare the next song on cue 1, then simultaneously push PLAY on deck 2 and cue point 3 (exit point) on deck 1 for a perfect, protools-like transition.