It is hard to imagine that it's been 10 years! It seems much more recent.
I had 4 cats that March (Cameo, Isis, Kalahari, and Phantom.) Although my girls only seemed to have had mild effects compared to some others, and Phantom is, amazingly, still with me at age 21+, I often wonder if that "hit" from Nutro food contaminated with melamine shortened the lives of both Isis (died at age 16) and Kalahari (died at age 17.) (Cameo, the Hurricane Katrina survivor, as you all know, died of spinal cord cancer in 2011.) Kalahari in particular was found to have calcifications of both kidneys shortly before she died in 2015.
I remember the terrible panic I felt when I realized exact lot numbers of their food were on the recall list. I remember taking them all to the vet in one day.
I have always rotated foods, brands, and flavors, based on advice from a wise old vet many years ago when I got my first cats, and I think that is what saved my girls from a worse fate.
What changed the most for me over the long term was how I felt about feeding my cats. Prior to March 2007, I used to enjoy giving them food and making them happy with it. Since then, I am always worried, in the back of my mind, that I may somehow be harming them.
I don't think much has changed for the better in the pet food industry. There are still some recalls, but I think that plenty of bad things go unreported or covered up. We all need to stay vigilant.