please critique Crescent

Please Critique my horse Crescent.
He is 14 years old. He is a appendix quarter horse used for pretty much everything.

He inherited a QH head, TB withers and legs for sure. He is a bit sickle hocked and has what look to be knife withers. His bone is a bit light and he is a bit tied in at the knee. He has a nice shoulder.. and might be nice in the air over a fence. His croup is a bit steep and his back and coupling look stiff.

That being said, you say he is used for "everything." THAT, my friend, is far more valuable than an on line forum conformation critique from me!