4 door newer cars - mainstream stuff, like Ford Focus, Taurus. Wagons of all types would be cool too.
I've owned two wagons that I'd like to make models of someday - 1977 Ford LTD II squire, and 2000 Ford Taurus LX.
How about a mid-80s rental fleet? Ford Tempo, Chev Cavalier, that type.
Others that would be fun builds are early 90s GM wagons, like Caprice and Buick Roadmaster. How about a 94 Impala SS phantom?
Late 80s full-size wagons like the square GM, and Ford would be neat.
Early 70s big 3 4 door low line fleet cars, taxis, police cars, fire chief, etc would make for some fun too.
Okay...that's a start!!