Not sure about Jalen Smith. In theory, a young PF, is exactly what we need. But it is exactly what IND needs also. If he is good, why would they trade him for scrubs, if they don't value him and are willing to trade him for scrubs, why would we want him? I have not seen Smith play lately so I am not sure where he is at. If he is actually someone that would play regular minutes for us like Grant or is he something less than that? If he is Grant or better, they are not going to trade him for scrubs.
Crowder is interesting. He could help us, no doubt. Can play SF and also swing/PF. For PHO though, other than saving around $2M, this trade would not give them anything that helps them this year. I don't see them valuing a 2nd round pick all that much.
I don't recall what Crowder's issues were with Boston when he left but it is a new regime now so maybe that could be resolved. I guess that if at the deadline, the Suns don't have anything better, maybe they consider this. Assuming Crowder would buy into a trade to the Celtics, I would do this trade. I see Crowder as likely helping us win some playoff games, something Gallinari or Vonleh probably won't do this season.