Iacisrmma – I think the issue here is someone who is “very makpid on looks” as the OP put it. I think there are boys for whom the looks seems to be the main thing that matters to them (and they “need” a specific look and only 1-10% of all girls fulfill their requirements) and then there are boys for whom the girls’ looks is not the main thing they are looking for in a wife but they obviously can’t marry someone whom they don’t think is pretty.
Also if someone has their priorities right, then I would think that whether or not they consider someone attractive will involve the person’s personality and middos as much as her looks. Okay, I realize that I am a girl so it’s different. But I do know boys like that, so it’s clearly possible for a boy to be that way.
Also, usually when boys are makpid on looks, they are davka into thinness. This comes from society and is not something natural or objective. ( think this may have been pointed out already in this thread.
Also, there is a difference between saying that you can’t marry someone whom you feel is ugly and saying that you only want to marry someone super-gorgeous. (unless of course your definition of super-gorgeous is based on middos, personality and Yiras Shamayaim).