Interesting interview by Steve Hullfish of Clayton Condit on using FCPX to cut a feature film.
Libraries for reels, libraries for different cuts, library for temp music and related, use of string-outs (something I think would be awkward in FCPX) to edit, "speed blade" for retiming.
It's almost as if Condit is trying to sell Hullfish on FCPX.
CONDIT: I’ve used other software and FCPX is definitely changing the timeline and how you approach a project, but it’s not really that profound. There’s cool stuff like “Replace and Add to Audition.” You can have multiple takes and if one take is three seconds long and another take is four seconds long, it ripples the timeline for you and changes the duration of the shot while keeping everything in sync. That’s the beauty of the magnetic timeline. Everything’s so fluid and you just stop thinking tech and are really free to be creative and try things without worrying about timeline management. People think that the audio gets messy because there are no tracks. I think it is actually cleaner and easier to work with. A lot of your audio is nested in the video of the primary storyline so that makes for a super clean timeline. Individual audio clips can have specific sync points and that becomes a visual cue when editing and moving things around. You can use Audio Roles and collapse what you don’t want to see without worrying about sync. You can create secondary timelines to organize and manipulate sync for a group of clips. I find it very fast and quite frankly a really fresh way to cut.