Thanks to kroah for setting up the linux-hotplug project and mailing list. I just put some stuff onto the homepage, since otherwise it's a bit painful to find; and sent out a list query for help generating some integrated docs for all the hotpluggable drivers on Linux. (XSLT/Docbook is my preferred solution; it's not exactly the kind of problem the kernel docs are set up to address.)
This promises to be an interesting project, although it's inherently a complex architectural problem of the type I'm not sure I know Linux has addressed before. If you want most devices to autoconfigure when you connect them to Linux, that can mean changes all over the place. Right now it's been seen to behave pretty well for USB, PCI, and networking, but it's a bit thin on integration testing and on system docs.