typically speaking, you are sort of right about the lack of variety during the winter, cause its just the usual crowd.
But, during the summer there are also a few well modified 3rd Gen Rx-7s that show up, several nice Subies, SRT Neon (I dont like them, nor are they imports, but its not on your played out list), M3's, 240's, Evo's, G35's...should I continue?