In north Europe it seems that cloud point and caloric value add value to CO2 emission cuts but complex plants are required; they apply also to imported palm oil, You might see
Hartikka, T., Kuronen, M., and Kiiski, U., "Technical Performance of HVO (Hydrotreated Vegetable Oil) in Diesel Engines," SAE Technical Paper 2012-01-1585, 2012, doi:10.4271/2012-01-1585. and HVO rferences
Each poperty of fuel has got its own importance. Ex: Vegetable oils have calorific value comparable to mineral diesel. but they have longer duration of combustion, may be due to high viscosity. Hence performane of the engine was deteriorated. Similarly density of fuel is related to pariculate emissions. Bulk modulus is related to peak pressures.It is very complex phenomena to predict the performance of the engine based on single property of the fuel. .
I agree but the only suggestion for developping fuels that cut CO2 emission during the process and are suitable for export is in my opinion HVO or further Fischer Tropsch process. In other words all properties are deriving from the chemical composition and alkanes only is better.