I dont see anything wrong with displaying just a top!!! Be sure to treat them well though out of sunlight etc - this way others who have admired them could always have them quilted in your memory some day. They are your quilts - do what you want :thumbup: I see each top as a piece of artwork made with love. :thumbup: :D
I consider the "lady" who made the comment a "quilt snob" :lol: