I see Perkins retaining and I think it's the right call to make at this time.
To be perfectly honest, I'd rather see the Cruiserweight Division on SmackDown Live because I feel that more time will be given to establishing the cruiserweights as personalities rather than just smaller, athletic guys. It may have been better if the Cruiserweight Division was centered in NXT because I simply have more faith in Triple H's booking than Vince's. That's not to say that Raw can't turn it around and they are moving things in the right direction, it's just taking longer than I think it needs to.
Whenever a new title is created, one thing I absolutely hate is for the inaugural champion to drop the title within the first month of winning it. I'm not a fan month long title runs to begin with, so taking the title off TJP, to me, would send the wrong sort of message considering how much energy and effort was put into the Cruiserweight Classic.