I think Ibaka would absolutely see time on the floor. He could actually come in handy against New Orleans and Milwaukee.
I think it would have been beneficial to have Jordan Nwora brought in earlier in the season when the team was getting massacred by injuries. He would have gotten valuable playing time and been able to produce. Shoot, the Suns may have been able to flip him again at the deadline.
But bringing him in now, I don't know if he could win a spot in the rotation this late in the season. I don't see Monty going away from Craig, especially since Nwora isn't a strong defender.
Hill would just be improved point guard depth over Saben Lee and Duane Washington. He would only play with Paul or Payne go down with injuries, which probably will happen again at some point this season.