If any of the player you mentioned had gone on to shine in the league, you might have a point, but given they haven't... I'm inclined to say you don't.
A coach is always going to put the team he thinks can win on the floor, and if the players you mentioned don't figure into that, it might be worthwhile to ask why they find themselves in that predicament. Remember when people were furiously calling for Pop to Free Beno? Remember, then, how Detroit completely exposed Beno's poor decision-making in 2005? There was a reason he rode the pine so long.
I think Bruno's observations about our team's lack of balance in personnel are dead-on and need to be addressed, but making adjustments based on opinions about how good X young player is simply because we know very little about his abilities isn't a solution.
Think about it: we paid good money for Nazr and Elson, both of whom were unexceptional centers. If we're now looking to potentially move Ian (and almost certainly willing to part with him given we didn't pick up his option), there must be a reason. Pops Mensa-Whatsisnuts had a good game for us once, too. Now he plays in Russia, I think.