I never even thought about the hind engine cooling problem.
They make a big super scoop to help with the rear engine cooling
One thing I didn't see talked about was my concern about the booms/stabilizer putting torsional stresses on the wings.
Looks fragile and inefficient. And the cabin noise must be terrific.
The same design type of tail boom works just fine- you see it on the OV-10 Bronco II too.
Cessna builds excellent aircraft. They may not be the fastest but they tend to be stout and have decent flying characteristics.
The 337 design was used as a FAC aircraft in Vietnam, designated as the O-2.
They do have an unusual sound signature.
Is in-flight engine failure in a cross-engine twin that much of a problem
Yes