James,

     I don't understand what you can see in common between Busybox and 
Systemd. They have exactly opposite goals and behaviours.

     Busybox is a rewrite of many of the Gnu applications (util-linux 
and much more) and also non-Gnu ones. It is legitimate in free software 
that several versions of an application can be available, and Busybox is 
one of many free software projects, not less legitimate than Gnu. There 
are two things which make Busybox differ from Gnu in the intent: 1) be 
POSIX-compatible, with as less extensions as possible, 2) be as small as 
reasonably possible.

     The Busybox development community is open and friendly. Their 
obsession is to stick to the standard; it's difficult to be more 
respectful to the Unix spirit.  There must be a misunderstanding and I 
really hope you'll have an opportunity to change your opinion about this 
project.

     That said, I fully agree with you that udev is the major weapon the 
systemd team is using to lock themselves in the place, and breaking udev 
monopoly with vdev is the answer.

     Didier