How about 1934 So Cal Coupe or Pierson Brothers Coupe? GMP made diecasts of those a while ago, but it'd be cool to see them in plastic.
I think the problem would be such a kit could only build it one way with that radical chop and laid back windshield, so sales would be very limited. Yes, you could kitbash the parts, but Revell'd be better off releasing a retro/traditional rod with a more streetable roof height, based on the Rat Roaster tooling.
I'd like to see some of the Tamiya/Fujimi out of print kits show up under the Revell name
Why wouldn't you want Fujimi just to reissue them? The only reboxed Fujimi kit under the Revell brand I recall seeing were the GT40 curbsides.
My personal top 5
1971 Dodge Challenger
I had such high hopes when Revell announced it's 1/25 '70, but being die-cast based it was a major disappointment. At least we can pin out hopes on future variants once the 1/25 '70 Hemi 'Cuda kit arrives in a few months.