Yeah, I dont get into all the "must do" mods either. No matter what ya do, the DRZ will always be heavy as hell. 3x3 mod will just make your airfilter dirty as hell really quick. FCR carb will give a lil power, but mostly cost alot AND ruin your MPG. I changed tires, added a thick skid plate, added a DRC rear tail light. Removed the blinkers and mirrors and ride the piss out of my 2012 every chance I get.
I bought a DRZ because I didn't wwant to have to waste all my time working on my bike, and DRZ's flat out last if ya change the oil and filters.