Frankly, the only place this matters is on defense. In most offenses, the 4 and 5 are pretty much interchangeable. In ours, the 4 typically mans the low post while the 5 plays the high post and sets the screens. Given his size, I'd think DaJuan would be ideal for setting the screens, but he's also a much more adept low post scorer at this stage than Christmas, so I would imagine DC2 would play the 4 on offense. Given we play a 2-3, he can still play in the middle with Christmas on the wing (I don't believe Christmas is a 5 anyway, frankly) on defense, and play the role of the 4 on offense.
My issue is if Melo is still here, can we possibly play both he and DaJuan at the same time, considering that would likely create a major deficiency on defense, since DaJuan is just NOT a 2-3 wing?