Ok, here goes . . .
First of all, he is totally, too, too cute! Irresistable! Thought I'd get that out of the way first.
He has a good porportion of neck to back to hind end , something that is just good for the horse and best for good balance. His front legs are a bit close together in front, which for the rider can mean a smoother ride, but can also mean they might clip each other when he is moving and may mean a little less balance in rough terrain. The front legs are free at the elbow, which kind of counteracts the narrowness, allowing him the ablility to reach sideways more easily. His knees are great and in fact his legs have good bone and his hooves are nice and large in porportion to his body (critical for a horse to not have hooves too small to carry his mass). His shoulder is nice, but strangely undermuscled and it looks like he may have lost some muscle mass just behind the withers. Makes me wonder if the saddle is really a good fit or not.
Something for you to check on, no?
The way his neck has a dip right in front of the withers tells me that he may have been ridden in some sort of tie down, like a training fork or a maringale or draw reins, at some point in his life. He has built up the muscles in his neck that are used for holding the neck in this forced head set, and the muscles used to raise the base of the neck , which are at the base and just in front of the withers, are a bit attrophied. I would be very curious to see a video of how he moves.
He seems very sweet and I think you are probably a rider he appreciates.
I like him a lot and I bet he is very versitile.