I, like others above would love to see Revell do '58 Fords. A '58 Custom 300 sedan (prefer a 4-door, but a 2-door would be okay too). A '58 Del Rio Ranch Wagon. And of course a '58 Ranchero.
Outside of '58 Fords, how about a early 70's Capri. One setup to build as a European or US spec model. For the US version, set it up as a 1972. The first year the Capri was offered in this country with a V-6. And the last year with the small tucked in bumpers. Another one Revell should consider is a US spec '71 or '72 Toyota Celica. And how about a '67 left-hand drive Toyota 2000 GT?
In trucks, I'd love to see them tool up a '69 or '70 (though '67, '68, '71, or '72 would be okay too) Chevrolet Suburban and panel truck. While we're at it, a Corvair 85, especially a Ramside, would be cool. And so would a 1st generation Econline pickup and/or Club Wagon.
Scott