I think GM has done very well with their line of crossovers. I have been a fan of the vehicles built on the GM Lambda platform (Enclave, Outlook, Acadia and the new Traverse). They are all very nicely designed, spacious, well thought out vehicles. I am also a fan of the new Equinox and Torrent, although Pontiac has apparently tanked.
My only complaint about them goes for every GM vehicle - I dont like how there are rebadged versions of almost every vehicle. For example, the Outlook and Acadia, Equinox and Torrent and even more similar is the GMC Yukon/Chev Tahoe or their pickuo equivelents, Silverado and Sierra. That said, GM has done wel redesigning them all.
GM gets a lot of negative attention, but I must admit I am a fan of a lot of their vehicles.