517 was a great bull in his day, but he was mostly a tool to initialise the shift back to a more sensible size. Not saying there isn't a use for him today, but there are great descendants of him that I'd rather use now.
All that said, there is potential in the bullcalf, eyes are not great, but neither the cow nor 517 had great eyes, there is depth and he looks sound enough, granted there isn't a lot of power, but I've seen AI bulls with less. His masculinity is OK for his age, I just struggle to understand the feeding regime. Its like being pregnant, either you are or you are not, there simply is nothing in between that is worthwhile