Shaq is going to start! Zydrunas is a guy who'll do whatever for the team, he doesn't care. Though it would be the classy thing for Cleveland to show loyalty to Z's long service to make him the starter, they won't. They know it will be too much of a blow to Shaq's psyche.
Erego, Shaq will start but only average 24-28 mpg; plus he won't play in back-2-backs. Z will pick up the slack which will mean more rest than he has seen in recent years. That'll keep both players fresh for the playoff run, barring some unforeseen freak injury.
It was a good move for Cleveland to bring in Shaq. Yeah he's only a borderline all-star and a shell, but he's a huge upgrade for Cleveland.
If they bring in Charlie V, that will be a monumentous coup for Cleveland. I doubt it, I think Charlie V and Ben Gordon will both end up in Detroit.