A minority opinion here: I am delighted she's taking this on. I saw her Blanche, which took most of the run for her to nail. But nail it she did (Julie Harris, no less, thought hers was one of the best she had ever seen). And then her Amanda, to me, exquisite, was burdened with one of the worst productions of "Menagerie" I've ever witnessed, with bizarre casting everywhere, starting with Sarah Paulson (wonderful actor, miscast and misguided) as Laura, and framed by a summer stock-ish Tom of Christian Slater, a late replacement, bringing zero to the party, but mostly David Leveaux's extraordinarily bone-headed direction (lace curtains on travelers, racing across the stage). Lange managed to carve out an Amanda that could've soared in other trappings. She is now older, and make find even more in Mary. Two friends saw it in London and said she was definitive.
"I'm a comedian, but in my spare time, things bother me." Garry Shandling