These things would be nice to have:

These things will change in future udev versions:

o warn if BUS, ID, SYSFS are used as keys

(they are SUBSYSTEMS, KERNELS, ATTRS now)

These things are deprecated and scheduled for removal in a future

udev version:

o remove udevstart

(we rely on the kernel "uevent"-triggers of kernel 2.6.15 and no longer

want to guess event-properties from sysfs like udevstart is doing it)

o remove extra for /etc/dev.d/ /etc/hotplug.d/

(that inefficient stuff should finally go away)