I think Lindsay and Rockne seem to have similar body types which might make them match well looks wise. Neither are long limbed or slim-hipped so they might end up looking good on the ice. Rockne does not need to bulk up. He's very athletic with very strong legs and upper body.
A girl's weight does factor in but not as much as some may think. Yes she does need to be strong but most importantly she has to have excellent technique to assist the lift. If the girl plays her role well to assist and lock in the lift (including twists) then her weight will only matter on things like maximizing height on a twist.
Two perfect examples of girls pair prowess can be found in Canadian ladies. Paige Lawrence just bombs into her lifts and gets up there almost on her own. On the other hand, Jessica Dube is a very heavy lift in the sense that the boy has to do most of the work. Duhamel even falls into this category.
So net net a new pair like D/B can work if they are just a good match in body type, goals and most importantly technique.