I thought my earlier post was quite long enough, maybe more than long enough. I did want to add, however, that I see nothing wrong with a man or woman wanting to be married to someone whose appearance they find pleasing. It is always advisable- and in fact this has always been the practice- that the man and woman see each other before the engagement (eirusin) takes place.
I also find it completely irrelevant to the discussion whether men now prefer brunettes when they used to prefer blondes, whether men prefer extremely thin women when they used to look for more rotund partners, or how society may or may not have changed with regards to viewing physical characteristics.
What I take issue with is the nonsensical assumption that this situation will in any way be enhanced by a young man receiving a photo of a young woman before going on a date.