First off, yes please to ladyThor. Loki will definitely be female for the plot. Ladies everywhere. (I just have no one to offer as a possible pb cause I'm unhelpful like that.)

And old man Bucky might be good. Laurie's getting age switched back to his early teens. So he'll finally have two good legs, but he'll also have only his teen memories so he won't exactly be appreciating it as much as he should.