The lines on his feet are possibly partly down to a change in feeding. You see it a lot on horses who go from sparse grazing to richer grass; perfectly normal and nothing to worry about. If the pics were taken at the end of summer, it's likely that nutritional changes at the end of winter, going into spring, has resulted in changes in horn growth. The other possibility is that he's had some form of infection in the coronet, which has affected horn development. Ask your farrier to have a look; if he's had scabby greasy legs, that could also be the reason for the odd horn growth.
As a cob he's nice; no, he's not a heavy cob, but that's not a fault! He has better hocks than lots of his type (lots have rather straight hocks) - his are not bad at all. His thigh is a little weak and he is slightly goose-rumped; again, quite common in his type. Neither are terrible though - there are lots of splodgy cobs with very weak back ends, and his is not.
He has a lovely open shoulder, if a little straight (again - straight shoulders are typical of his type!), good length in his quarters (from hip to point of buttock - lots of power there), good deep strong loin. His canons could maybe be a tad shorter... I dunno... that really is nit-picking though!
Neck's set on nicely, head too - he doesn't look too thick through the throat.
Other than the niggly bits and the need for a stronger topline (which as has been said will come through work) he's a nice little cob. I like him.
