For those that are considering Zorko, I've done some research into his scores and these were the results found:
With Beams & Rockliff: Average of 89.3/9 games
Without 1 of Beams/Rockliff: Average of 108.5/13 games
Based on this you can see that Zorko flourishes when one of Beams/Rockliff don't play, so if one goes down with a season ending injury then yeah he would be a great pick, however I think if both play which is more than likely, he won't be that great a pick. Just another thing I noticed, these are his scores to finish 2015:
96, 61, 137, 117, 157, 109, 95 (As expected, the 61 was the only game where both Rockliff/Beams played, once again showing how much they impact his scoring).
Anyway, based on my research I don't see him as value or a good pick as I think with Beams/Rockliff back, he will be pushed back to the forward line which greatly reduces his scoring output.