Shaq's Signing: What Does It Mean?

I must admit: I've never been quite so unsure as to how a free agent signing would work out.  Usually something makes total sense (like when the Flakers were gift-wrapped Gasol by the Buffoon.)

I'm trying to look at this as objectively as possible, which is tough being a huge Celtics fan.  So I've done some brainstorming and here is my take on the Shaq signing (which should be made official tonight or tomorrow):


Negatives:

• Can't defend the pick and roll to save his life.
• Has always been a starter.
• Big ego.
• Teams he's left recently have improved (Phoenix) while the one he's gone to got a bit worse (Cleveland).

Positives:

• C's have a gaping hole up front with Perkins being out for most of the year and Rasheed retiring.  
• He's the best big man left out there (I'm sorry but even at this point he's a better player than Kwame Brown).
• Celts got pounded on the boards vs the Flakers in Game 7.  With the biggest player on the floor, perhaps they don't give up all those offensive rebounds.

I don't know what to make of this.  Obviously I hope it works out for the best.  How do you feel and why?