ROFL.. Hiya G Unit
Actually the biggest plus in my opinion would be the big reduction in soot and particulates getting shoved back thru the engine.
From the many discussions on the 'net about EGR the one common thing that stands out from all the posts is how much cleaner everyone reckons the oil is. Considering the oil is only getting a small percentage of the crud as the majority does go out the exhaust eventually it must be a VERY beneficial mod to reduce engine wear.
Waddya reckon Rusty... perhaps we need a Perth Garage Day and knock over all our ZD30's together