I left a little over 11 years ago and I could never be happier.
I never second guessed my decision to leave and never once considered going back.
Unless you're in love with El Segundo for some weird reason there are a lot of other and better opportunities out there.
Toy creativity and drive are still out there, however they are just not at Mattel.
What's left are just corporate players and their minions. They will continue to milk the brand and extract profits for themselves. The workers gets nothing.