Actually if the LeBaron (debuting in late 1977) had appeared as I imagine it was probably pitched in the first planning meeting; it might have be a very profitable venture.
It was most definitely a reaction to Cadillac's Seville, itself a reaction to smaller European luxury sedans.
It should have had a unique roofline, even if just coming up with the 5th Ave "cap" 5 years earlier. It needed higher standard content, (power options and door panels), no manual /6 versions. There should have been no Dodge version, or the Dodge version should have looked substantially different.
If executed in this manner, it would have been a smart use of the LeBaron name.