Hall has experience playing second, short, third, and all three outfield positions. He isn’t a defensive wizard or anything though and has had his two worst defensive seasons over the past two years, suggesting that at 32 he might be slowing down a little bit.
He is a typical right handed hitter in that he hits lefties better than righties during his career so he doesn’t seem like a good candidate for a DH platoon with Andruw Jones. Last season he was actually better against lefties, but last year was just an ugly season for him as he had a .261 OBP and .575 OPS overall. He had a .298 OBP and .638 OPS against lefties though.
Eric Chavez certainly seems like a better option than Hall at this point, but at least Hall can be counted on to stay healthy. If Chavez is just going to sit on the DL for most of the season again there is probably no point in signing him. The Yankees tried and failed to sign Hall a year ago.