I think to prevent Chinese industry from being too spread out and taking away from other Xi'an projects like next generation AWAC and UAV tankers, a H-20 refueling module might be the best way to go.Yes, those stealthy BWB tanker aircrafts having larger RCS than the VLO bombers certainly is a big minus in terms of stealthiness and survivability in high-risk airspaces. However, those BWB tanker aircrafts are not going to accompany the VLO bombers all the way to their designated mission areas - They are only going to fly as far as they need to refuel those VLO bombers before they make a U-turn and head back to base. Only those VLO bombers will continue towards their target.
Instead of having to fly over Canada or Alaska, those BWB tanker aircrafts only have to fly to the Bering Sea, the Arctic Ocean or the Central Pacific at most, where US and allied military installations would be sparse and far apart, hence reducing the chances of interception by US, Canadian and/or Japanese fighters, for that matter.
HU-20 isn't exactly ambitious or out-of-bound per se, but a new refueling platform resulted from the need of a stealthy refueling platform that would extend the H-20's combat range all the way to CONUS. But a modification option for some base variant H-20 units to be fitted with fuel tanks and refueling drouge only (instead of bombs or missiles) should do the trick as well.
Shahed-like loitering drones is useful for Ukraine, Iraq, Yemen and Syria, i.e. countries that has flimsy to zero effective anti-air defenses against larger warplanes, let alone drones. But for countries with fully established and integrated layers of SAM network and even dedicated anti-loitering drone systems like the US and China, deploying Shahed-like loitering drones against targets with substantial anti-loitering drone system coverage is going to be very difficult and suboptimal.
Besides, sending H-20s all the way from China and across the Pacific/Arctic just to attack targets on CONUS with Shahed-like loitering drones is going to be very wasteful. A better way of employing these loitering drones would be housing them inside containerized launchers, while being carried onboard normal container ships. They can be concealed amongst other normal shipping containers, which would then be activated to launch loitering drones once within range of its targets, which can be achieved when the container ships are around or within CONUS territorial waters.
I think that a mix of Shahed style drones and heavy cruise missiles of similar range would actually be very good for strikes against NA. The force posture of a certain country is like a shell - hard on the outside but inside is nothing, thanks to their aggressive forward posture. It isn't like the typical force posture of getting stronger as you get closer to the country.
The Shahed style drones can target symbolic and soft targets, while the cruise missiles can target hardened targets.