I haven't heard much about how Jared Jones-Smith has performed at practice, but I saw that he measured 37" arms and a wingspan of 87 3/8", both tops at the event. That is big even for a person his size (7'3"+ wingspan at 6'6"). I don't think that alone will get him drafted but it can't hurt. Arm length is a dubious indication of success, but that sentiment is out there, especially so at tackle so it could help how teams view him as a project.