Good thread Manton. I think this goes toward a topic that Vox brings up often -- wearing the right clothes at the right time to fit into your environment. After ascertaining the non-seasonal basics, a more developed sense of style includes looking appropriate for the season. There's never anything wrong with wearing a well tailored three season suit, but wearing the right seasonal clothes and accessories is a sign of a more developed wardrobe.
Part of the problem though is that it's not easy for many people to get the non-seasonal part of their wardrobe squared away. It's a dangerous thing for people to start shopping for cotton suits, madras ties and bandaid colored shoes when they may not even have a plain navy suit yet.
Also, since summer is more than half over and Fall isn't too far away, maybe we could also start a thread on appropriate fall combinations?