Guitarhacker,

Videotrack caught my line of thought. A piece of soloist, together with some holds/stops, change of instruments, solo/mutes or even style should be sufficient to make a nice intro. "Intros" are challenging regardless of program etc. (at least for me) It is first "impression" of the composition. Soloist tracks definitely add more flavor.

The video on custom ending was helpful.
I wish there was similar video on intros, done for actual song, not just a simplified example, to see the workflow and various tips/tricks in single place.

P.S. In hardware arrangers there are usually at least 3 intros available mixed/based on the rest of the song. I know that BIAB does not offer that, but it would be nice if:
You create 1 intro and program would randomize stuff based on data/sound of your intro to give you somewhat different sounding choices to experiment with and tweak later.