It would be a cool feature! Maybe it can be implemented like Roboports who output letters that represent the internal state, e.g. Y is the number of logistics bots in the entire network.
I'd use this to automate blueprinting with requester chests to input drones.
Another idea is to also output the "requested amount" i.e. the number of bots multiplied by their capacity.
This could be used to:
* Detect zeroes
* Create advanced warnings like if an important requester is only satisfied to 30%