IMO, if PAF really wants to threaten Indian air defense and military bases, it should try to eventually import GJ-11 or CH-7 from China. The current UCAV you see are pretty low tech stuff. They are cheap to operate to attack armored vehicles or army groups that have no air protection at all. But if you want to destroy opposing air defense, these things can't harm them. They are generally very slow and carry very little ammunition's. The only thing that can really threaten modern air defense is something like GJ-11 or CH-7. They are extremely stealthy all around and can carry a lot more ammunitions. They can also fly very high and at high subsonic speed. They are the first step to what eventually would replace strategic bombers like B-2.
This Chinese Combat Drone Can Dominate Asia
Via Chinese state media. If the recent Air Show China, formerly known as the Zhuhai Air Show, made a single lasting impression it’s the PLA’s unrecognized advantage in unmanned aircraft…
21stcenturyasianarmsrace.com