Easier changes??? Aren't they hex bolts? A conventional socket is so much easier! You do pull the covers off, right? Because if you're not pulling the covers, you're not properly servicing your diffs IMHO. Not pulling the covers defeats the real mission of having $500 covers (ultimate reliability with the job done right, right?).
I also understand the benefits, especially after reading about all the front and rear diff failures here on TDR and other places that were a result of excess heat that Dodge didn't consider.
Bling.