I am interested in contributing some sort of alternative for simple single user systems on older hardware.
users should not be forced to use Polkit and udisks if they want a simple WM to mount removable media / devices and do simple powermanagement like suspend or shutdown the system.
Problems with Polkit are:
It uses a programing language (Java) for configs, is difficult to configure without any Gentoo documentation, and lacks a way to test rules.
It adds more overhead than needed for minimal systems.
Polkit is generally not necessary for a single user system like a laptop and was designed for enterprise sysadmins.
There are many posts detailing why udisks is a problematic system as well.
Some folks over at puppy linux have pup-volume-monitor for mounting devices, it may not take much work to port such a thing to work on Gentoo or perhaps something else? Then some documentation on how to install Gentoo without requiring these complex bloated kitchensinkit software.