Totally agree, I want to see more of this guy!
ONE LI'L NITPICK:
The pockets on his jacket seem a BIT low; you have them placed at the height-ish of pants pockets, but suit jacket & blazer pockets are usually set up higher, nearer to the top of the hip bone.
To save changing the arm position you might try either having his hands in his pants pockets with the jacket bunched up over his wrists OR outsizing the jacket a little more and making it longer on him. I think doing either one might also really help push the whole rough, slouchy thing he's got goin' on a little further.