You are right about Alia's character in Dear Zindagi.
I man if dear zindagi had a guy actor instead of female, and if that male lead goes and sleeps with different people like Alia in Dear zindagi , people would have looked at him completely differenly. And also she falls in love with 4 different people one after the other lol. Can't imagine a guy doing that. He will be termed as something else.
And about guest appearance is not as big as Srk,? what do u mean after 380cr film all alone on Aamir's shoulder. Even the opening of Dangal was fantastic