My, he is a bit hammerheaded, isn't he? O.o lol
I don't see a roman nose. I think what you're seeing as a roman nose is just the parrot mouth and how big his head is.
His neck is a good length and isn't too thick or too thin. It does tie in really low on his chest, though. He is a wee bit pigeon breasted.
I do like his front legs. He's a tiny bit tied in behind the knee, but I've definitely seen worse. His pasterns have a nice length and slope on them.
His back is a wee bit long, but he has a nice deep heart girth. His croup is a little steep.
His hind legs are pretty sickle hocked. His hocks aren't as low as I'd like, but they're definitely not overly high, either. His gaskin looks rather flat, but it looks like with conditioning, he could have some good muscling there.
One thing I notice is that the heels on his back feet look quite a bit under run.
Overall, I don't think he's too horrible. His sickle hocks will take some consideration/care, but really other than that, anything that's "wrong" with him isn't going to effect his performance or usability overly much.