Queueing theory that I've read doesn't cover modern wireless networks such as 802.11 where the fields and interactions in freespace are very different than fields over a conducted copper wires or waveguides. And where the receiving antennas can change orientation quite easily creating step functions in so-called "network power" (throughput/latency) and where the traffic loads are non linear and likely chaotic. And where the media access is distributed in a way that A doesn't know what B, C, D, ... are doing to the receiver(s). And where network designers assume a packet is a property of nature vs a man made artifact. And where power per bit can no longer be met by AC plugs & leashes but needs a mobile energy source and store.
The idea that there is a single optimum or single holy grail queue algorithm for the parameter space seems misguided.
My view is the queue depth should be defined by the waveguide which is very hard because end to end is not a single uniform waveguide, rather a lashing together of disparate ones.
Networking is hard and we still haven't deployed fronthaul or Fi-Wi networks which is going to take awhile.
Bob