We all vote with our wallets. Like most of us, I don't need more kits, but I bought one each of the midgets after hearing what a well done kit it was. Yes, I like the subject matter, but I wouldn't spend my money if it was badly done.
In the case of the Falcon (and the coming Ranchero) I REALLY like the subject and would find the money to buy one of each if they were good. Perhaps my familiarity with the real cars makes me more demanding and critical, but I don't think unreasonably so.