I don't see why dallas would do this.
Yes, they need help at the SG position, but Howard and dampihir seem like an awful lot to give up for a half year rental that probably won't put them over the top.
As for us, i wouldn't do it because the only reason dallas is even entertaining offers for howard is because he's a mullet. He also would be quite oversized to play the 2, meaning we would have to move pierce to the 2 full time, which i don't believe he's capable of at this stage of his career.