One fan's wishlist:

(In no particular order)
Pacquiao-Marquez II
Mayweather-Cotto
Cintron-Williams
Pavlik-Taylor II
Pavlik-Taylor II Winner vs. Winky Wright
Vazquez-Marquez III
Hopkins-Dawson
Dawson-Jones (If Hopkins won't fight Dawson)
Wlad-Peter II
Casamayor-Juan Diaz