Why would anybody not want to see Pacquaio-Cotto at 145? Unless you just think he can't make it but it seems to me that 145 is not some suicide mission for Cotto, he's not that big for the weight, he came in at 146 last time. If he obviously looks strung out then you don't have to give Manny any credit for the win. Its not on the same level of when there were talks about Shane at 142, this seems within reach. Maybe I'm completely wrong and that one extra pound is the tipping point but I kind of doubt it.

Otherwise I don't see the point in being against a mega fight because of some abstract notion that he should be at 147 regardless of whether it affects Cotto or not.

A couple things that are being lost is that Manny will be smaller than the guys he's fighting even if they set the weight at 145. I'd be very surprised if he came in at more than 142. But more importantly he holds the cards, he has turned into one of the two big money fighters in the sport and unless your name is Floyd Mayweather Manny holds the leverage and can, for the most part, set the terms, weight wise or otherwise because Cotto, Shane, etc. need him more than he needs them. Not that I love it, I've said from the beginning that I'd rather he just fight them at 147 but it doesn't look like it's going to happen. As long as its not some absurd catchweight, and I don't think Cotto at 145 is, then I don't see a huge problem.