I'm not Sherylfag but when Sheryl was there, the character interactions were at least somewhat entertaining (which was supposed to one of Macross's strong points). But Ranka on the other hand is a fucking pathetic character. Her lines are horrible. It's always *blush*, "uh..eh..um.." or "Alto-kun" etc..
I'm sorry but I'd take shitty high school romance drama over Ranka's shit any day.