There are probably a number of layers needed for defence against a variety of threats.
Part of the challenge will be time to service.
I feel interceptor drones like “the sting” offer a good flexible capability at a good price, build numbers and rapid acquisition.
A capability needed across land and sea.
A concern for airfields particularly those near urban areas is the fallout from munitions.
30 to 40mm high explosive founds flying all directions in high volumes may not do wonders for the neighbours.
It’s a challenging task to find the smart answer.
Cheers S