I think the only thing that could make possible a "complete" FM album, is the inclusion of SN songs from the
Say You Will days, not later from her solo catalogue. She probably would prefer to keep her latest songs as her own ones, instead of new FM songs.
Personally,
LBCM is a FM album even when SN wasn't there. Nicks put less songs than Christine or Lindsey since
Tusk, so her work for the Lindsey/Chris album wouldn't be
"so" necessary, in terms of that a FM album could be possible without her. She had a good one on
Say You Will, but this time Lindsey and Christine had the chance to make it in the name of Fleetwood Mac. But some things happened...
