I just received my latest resupply which included both the clustered and distributed vias templates, and noticed that they also include power buses with access rows in the top, middle, and bottom of the templates, which is totally awesome.
My request is that Voltera also consider adding similar power bus lines to the other templates (i.e. Arduino Uno/Mega, Raspberry Pi, Feather/Argon). This would improve the template usability for those of us who do not want to drill our own vias in FR4 boards.