I've always felt that Freeman to 13 is a solution looking for a problem.
He's an excellent wing, and a proven international in that position. If he wants to switch to OC, then I'm sure he's got the attributes, but I don't think he needs to. I also don't think England need him to, and I don't think Northampton need him to.
At least with moving Daly to FB, there was a need, at international level, to find someone who wasn't Mike Brown, and would allow us all of Daly, Watson and May on the field at the same time, so Daly was the obvious one to try there (it's self-evident that the other 2 would never be able to learn the positional aspects of FB play)