And then, high on my sleeve success I decreased for the waist at a much faster rate but only until it felt like the right place. And it worked again! Clearly I was on to something so I continued to go with what felt natural. My last modification came when I realized that the turned neckline did not work as well as the rolled eyelet band that was its setup, so I left it and knit the hem to look the same as the sleeves.
I am thrilled with my success, and have determined to never knit a heavily modified sweater again. I think I'll go back to knitting replicas of pattern photos. It's far less stressful.
For more less stressful FOs, check out the gang at Tami's Amis.