This could take a while
so I'll limit myself to the FM albums:
On Rumours:
-"Silver Springs" instead of "Oh Daddy"
On Mirage:
- "If You Were My Love" instead of "Straight Back"
- "Smile At You" instead of "Oh Diane"
- "Goodbye Angel" instead of the horrific "Empire State"
- Any half-finished leftover demo/idea (yes maybe even "Teen Beat") instead of "Only Over You"
Ahem. Why not "Blue Monday"?
On Tango:
"Down Endless Street" instead of "Family Man"
On Behind The Mask:
- "Intuition" instead of "Stand On The Rock"
- "Victim Of Love" instead of "Do You Know"
- "Got No Home" instead of "When The Sun Goes Down"
On Say You Will:
"Down On Rodeo" instead of "What's The World Coming To"
"Space Needle" (among so many others) instead of "Silver Girl"