For a thread that started about Tate, things certainly digress don't they?
McCullough may have made a good fist of No. 6 in younger grades, but I don't believe he has the pace or variety in his attacking arsenal to play there in senior grades consistently. This is a well worn path tread by many up-and-coming halves who are a little slower, but defend well, and can mix it with the big boys ... PJ Marsh, Fien, Cameron Smith.
Back to Tate .. I'm constantly amazed with how people underestimate his ability ... he has scored some of the most scorching tries I've seen on the international stage, the highest level, and fans still question his talent.
Having said that, I think it's more wise to invest in youth when it comes to 3/4s.