Everybody has one- a list of models never released, not released in a scale you build, or only as something so inaccurate as to be useless.
Here's mine, all 1/25th scale:
1932 Ford with a completely stock, accurate, and super detailed chassis
Bugatti T57SC Atlantic coupe
Chrysler Chronos
Fred Frame Duesenberg racing car
Dry lakes/Bonneville streamliners such as Shadoff Special
Modern Bentleys
Pontiac Solstice
1961 Lincoln Continental retool similar to 1962 Thunderbird
Stuart Hilborn streamliner
My list could go on and on and could include many models in need of a good retool.
How about yours?