He is certainly useful.. he sounds like he needs work and training (not so laid back a life after all!). His legs are adequate (not perfect) and he should be OK. Yes.. he toes out but the whole leg is rotated and as long as he does not interfere and is trimmed level, he will be OK. If he interferes, use boots on him.
His hocks are nice and low and he is hind pasterns are a bit weak.. but the hind legs carry 40% of the weight so unless the pasten issue is medically based and will get worse, don't worry about it.
The poorest part of this horse's conformation is weak coupling and overly rounded croup with a low tail set.
What this horse could use (aside from learning he must pick his feet up and have good ground manners.. so get that done) is a LOT of trotting up hills with his rider standing in the stirrups in a two point and the horse on a long rein. Getting him to stretch forward and down.. and drive from behind up the hill strengthening his abdominal muscles will help him more than anything.
This horse does not need a laid back life. He needs to be worked (most do)!
There is something about the outside of a horse that is good for the inside of a man. ~Winston Churchill
) Dinosaur Horse Trainer