First, you are buying a truck like this to Work, not to Daily Driver. But, you can outfit these trucks very nicely with the LTZ package. Interior leather,finish and layout is very well done, not exceptional - it's not a Denali. Exterior new body style has intriguing design elements, ride is exceptionally smooth for this class of truck. The real appeal is the Duramax diesel with the Allison 1000 trans; this truck has literally more power than you can ever use in this class of truck. GCWR is restricted over 20K, this engine and trans combo can exceed that. Economy is what you expect from this type of truck - 18 hwy unloaded, 12 hwy loaded w/18K. This truck exceeds it's intended purpose.
Upscale car feel inside; - work truck capabilities. Tailgate assist. Very broad Option List to choose from. Oustanding sound system for a truck, Navigation, Rear Entertainment System, Sunroof, Rear Sliding Electric Window; etc. As I said, truck is WorkHorse - but you're in total creature comfort.
The head of a pin sized 4X4 Indicator light MUST go, ridiculously small. Add telescoping wheel, this is a big truck; a small man gets lost inside - although adjustable pedals is a huge benefit. Delete gas engine as option, this engine cannot equal the other capabilities of the truck - 3800# payload.