It's really gonna come down to how it's implemented but imagine this: you have ripple editing enabled for all tracks. You split all the tracks at measure 5, and then slip edit the end of the first section of Track 1 to roll it out more. Every other track and automation/tempo/meter slides along with it. That's super powerful. No more inserting measures, no more guessing if your buss automation will move with the tracks, the timeline automatically expands or shrinks to change with the edit you're doing.
Now as I said, it all depends on how this is implemented. In Vegas Pro, it works that way, and you can also do individual tracks too, so you could leave the rest of your project intact and just ripple edit on a single track, for example.
Pretty excited about this feature!