Golovkin-Cotto Golovkin-Sergio Martinez Mayweather vs Pacquiao around 2012 Joshua-W.Klitschko 2 V.Klitschko-Lewis 2 Mayweather-Khan (worst match up for Floyd)
Bowe vs. Lewis is probably the biggest one in my lifetime that didn't get made. Heavyweight title, two continents, the heyday of PPV. It would have been massive. Cotto vs. Oscar Ward vs. Bute
Seeing your list. The one that I wondered about was undefeated Reid Vs Francis before the shoulder injury.