Anyway, I think he's going to turn out to be a rather a nice little horse. Needs some TLC and his feet trimmed, as you mentioned. He does toe out slightly, on all four feet. He has a decent shoulder and neck. I probably would like to see a little sweeter head on him, but his is ok. He is a bit butt-high and I doubt that will change, given his age. He is a bit goose-rumped too. Considering (I think) he's not had excellent care in the past, he seems to grow a good mane and tail. Look after those and I'll bet you could have a tail which might drag the ground in time.
Worm him. Put him on a really good diet. Get a little weight and muscle on him and take some photos in about three months. I think he will look a lot better. Who knows what he might excel in. Maybe nothing, but just become a nice little riding horse. Who knows what breed is in there. His very thick mane tells me there might be pony of some kind. His rather large jowls, tell me he might have some QH. There again, he could be anything really.