It would be very cool to have a feature to import chord progressions from a text file! This would provide a really quick and easy way to enter a song into BIAB. I was thinking of a format something like this,

C/Dm/ F//G7 Am/G/ F///
Em/// F/// Em/// F///
C/// //// FCGC /F/C

and when the text file imports it would just set up a new BIAB file with the correct number of bars and the chords already in the right places.