I like GarNet. I'm not sure I'd support Rockford Files 24/7. I'd mix in some Simon and Simon and the occasional Columbo. (No Remington Steele would be allowed as it is profoundly stupid.)
Can you throw in Magnum PI and Matlock?
Simon and Simon and Magnum are in. Columbo and Matlock are out. No reflection on them, just too different.