Not sure how anyone doesn't think GGG wouldn't be deserving of a Sergio fight. I thought that was THE fight at 160 everyone wanted to happen. Sure, after Sergio there isnt a #2 who has cleaned out the rest of the division...but put me in the camp that based on what I have seen I think GGG is the second best behind Martinez (with Martinez' age and injuries I would favor GGG in a fight). Sergio has said he would fight GGG...word has been that DiBella didn't want it. Plus it would not have been smart to make it his first fight back...I think if Sergio beats Cotto and GGG wins his first two fights of the year (rumor is that April will be vs Kirkland, Geale, or Lee) than Sergio needs to be heavily scrutinized if he doesn't consider GGG.
I dont think Floyd would move up to fight Sergio...but I think a Cotto victory would make things very interesting in regards to Floyd going after a 160 lb title...seeing as he already beat Cotto. It would sell well too, Cotto has hardcore fans, he provided Floyd's most recent semi-competitive fight, Cotto would be back with a huge win, and Floyd could capture another division title...I love everything about it.