Hydro, I know exactly how you feel - so many good memories with my mom and my grandmother, as well! (Don't get me started on Filene's. Another Boston institution gone.) I think this project, however, may be a good addition. Good scale, material, signage, finishes the block in many ways. I'm hopeful with this one, a rarity these days...
What I miss, and what you may also agree with - I like the patina of time that sometimes verges on the - hope do I say it? - the visual and aromatic? It assaulted your senses. I loved it. Walking through the mess of stands and activity when I was a wide-eyed kid still conjures happy memories.