Sorry just glance at your post. Safety wise I can't think of an example, but he was my defensive back example. My point though is with the lack of safeties Nebraska returns next year and with the amount of talent Su'a posses, I without a doubt think he would start his freshman season for the Huskers.
It's the "without a doubt" part that I disagree with, but I see what you're saying. My point is that I can't ever remember a true frosh starting at safety for NU (and we've had some pretty spectacular talent at that position), so why would you be so confident that some recruit will play right away? I don't think he's got significantly more potential than Cooper did.
Regardless, I still hope we bring in good talent every year, and hopefully Su'a can be part of that.