The Art Gallery of Ontario is expanding, and simultaneously undergoing a bit of an inner identity crisis, with the recent controversial closing of its Canadian wing, and the announcement that it will begin to integrate such decorative arts as pistols and fountain pens into its collection. “Through the history of museums… idiosyncratic tastes have driven great institutions forward — and hobbled smaller ones in perpetuity.” For a sense of what paths the AGO may wish to explore, and which ones it may need to avoid, Kate Taylor suggests a fresh look at the various melodramas surrounding Philadelphia’s embattled Barnes Collection.