The ideas come across as having an edge of desperation.
On the off-chance you aren't actually a troll, have you even started to consider the energy consumption of drones that would need to be powerful enough to carry battery packs (heavy) at a similar speed to the cruising speed of the airliner?
That's got to cut into efficiency a little.
The idea of using compressed (even liquid) hydrogen as a fuel source has more merit. Not without difficulties, though. It's expensive to produce, and containment of same requires more dense materials than a typical container for kerosine. Nice, clean burning fuel source. But takes a lot of energy - along with the pollution that would entail - to make it.