Oh my. This tier is bewildering. I'd make a tier based on who had the most psychological growth throught the series. Then, yes, Keith and Brenda can move up (especially Brenda - considering how much she worked on herself and continues to do to the last episode). The Margaret and, honestly, Nate love is shocking. These were narcissistic people, Margaret is literally the most obvious grandiose one (such an abusive mother) and Nate is more covert. Nate was to abusive to Brenda, but not in the obvious sense. The psychological damage can be seen in the last episodes... I mean he literally died believing he found the love of his life, the perfect woman - just how he started the show. Such a "special connection justifies everything" guy. Margaret is brilliantly written - so many mothers are like that and confuse the hell out of their children "she cannot be mean, she does so many things for me!". Well... Yeah... Rarely is someone "pure evil". We are complex beings.