It really sounds like this is a request to allow very few, if not just 1, defender to prevent a base capture without the hangars also needing to be destroyed or enough vulchers present to kill anybody upping.
Here's the problem I have with that..
Whereas it's practically a requirement that town - based captures be a team effort ( not easy for one person to destroy town and capture it, is it? ) the defense of such should be a team effort also.
If your country cannot field enough defenders to stop an attack, then it deserves to lose.
Several changes have been made over the years to prevent a single person from easily impacting throngs of others. For instance, Fuel porking, where a lone Dora was able to reduce max fuel load out to 25% at a base, or destruction of troops by a single fighter... Yes, it probably still can be done if the porker is not devoured by the beefed up ack.. but nowhere as easy as it used to be.