Not sure what's best and whatnot for H/J, but I can tell you my thoughts for dressage. (Again, a disclaimer: I'm still learning conformation too!)
He's just a tad straight behind than what we want, but then, there are a lot of high level horses with this sort of leg. I'm not too sure about his stifle hock set, and his stifle could ideally be set a little lower. He looks a teeny little bit downhill (his stifles seem higher than his elbows) too.
He has great LS joint positioning though, with a decent enough coupling. I'm not sure about his loin, it may be adequate or it may be a tad weak. He has good pelvic length and a nice long femur.
I always have trouble with analyzing the shoulder, but it looks nice to me. His neck is not set low with a good point of shoulder, so that should help counteract what little downhill he is.
His neck set is okay, and there is a dip in front of the wither, but that should lessen with correct muscling over the topline.
All in all, this is a very nice horse I think. =)
EDIT: I just wanted to mention that although I'm not detailed at jumper conformation, I think this horse could be a great jumper. I think his front end is built very nicely for jumping, I can see him tucking those knees easily. And he has a great engine too. I think this horse could be very talented in jumping, actually, if his temperament is right for that.
Last edited by teamfire; 03-26-2012 at 02:36 AM.