I don't know if this is of any interest to you, but I worked out a very fast and accurate way of establishing cue points in LPX. Basically, take an audio track (it might be a supplied dialogue file, but it can be pretty much anything)and put a scissor cut at every significant visual edit point. Now colour the various sections, so you can easily see each one as an individual entity.
Using this guide, you can very easily adjust the tempo of each section to get an exact fit for your film-score, and to cue the intro point of new instruments etc.
If it helps you, you can also expand with idea into a full 'spotting' session, by taking notes on the visual content of each section, the sort of emotional feel, approximate tempo, instrumentation etc. You can do all this in LPX, giving you a self-contained project.
Thanks for taking the time to share this excellent pro tip. I hope to get more and more into this as time allows.