> 1, it predates POSIX by a year. so, theres none of the POSIX bloat in it. 
> 2, it has not systemV compatibility.

which means a lot of recently written open source utilities won't compile
on it.  (which probably makes sense since recently written software tends
to be written with large-memory assumptions that don't hold true for vaxen.)

> also, there are no shared libraries (which i think is a good thind, i 
> think shared libraries are an abomination, a security and reliability 
> disaster, and an administration pain in the ass, as well as plain ugly) 

if you mean the sunos-style shlibs which now dominate the industry, i agree.
if you mean shared libraries in general, i DISagree.  look at VMS or MPE
for examples of how to do this in a secure and non-"plain ugly" way.