Thanks for porting the mod and adding all the extra features. I'm playing an angels factorisimo run at the moment with the drones. Lots of fun.

I have not been able to get the priority to work. No matter how I set it, I have one requester that always sends a drone.
I have checked the box to deliver whole stacks only and the supply is limited so both requesters are waiting for a stack and then the lower priority requester sends a drone when a full stack is ready.

Factorio: 2.0.76
Transport Drones (Continued): 2.0.64
Other mods - Bob's, Angels, Mining Drones, Companion Drones 2.0, Loaders Modernized, Project Cybersyn, Bottleneck Lite, Even Distribution, Helmod, Factory Planner, and maybe some other small mods.