As a former neuroscientist, I welcome attempts to add more biologically-inspired complexity to the relatively simple computer-based NNs.

That being said, I suspect the authors still need to take a Neuroscience 101 class. There's any number of neuronal features missing from NNs that would be more interesting to incorporate before looking towards glial cells like astrocytes. E.g., different neurotransmitters, G proteins, gap junctions/electrical synapses, pyramidal neurons, really all large-scale and long-range organizational structures in brain.