Dear original poster:
If M-Go believed in her plan, she would've stayed. The fact is, it's the same playbook that CS, BS and the rest having been spouting for years. They just never DO it. Why? Because when you're #1 profit driver continues to sink like a stone, no matter how much money you throw at it, and how many of your own brands to sacrifice in the never of the Holy Blonde, you don't have the cash to do much.
Cost cutting IS HEADCOUNT and product. There isn't a lot more than that to cut unless you want a mutiny because the folks in El Segundo don't get their work from home day (stupid) or free coffee, or the latest "Coloring Book" event from HR posted on Linked IN (insulting).
M-Go chose to go on her own. Why? Because she faced the fact that she can't pull off her plan - that the deck and imbalance within the company's brand portfolios is unrecoverable. She came to save Mattel, but when she couldn't, she did what ever great leader does - quits while their ahead and leave the mess to someone else. She's a special person.