Well, there are a few E36 guys in here already.  We are not going out of our way to prevent E36 people...yet.  If it becomes a copy of BFc (at times) with teenage nonsense or behavior similar to the infamous Jordan, then measures will be taken.
A big E36 M42 club was actually started just before the E30 one.  I got the idea from them doing it actually, and some good folks here got us our own site and whatnot.  The E36 M42 does have numerous differences, but knowledge is always welcome.  If you cannot find what you need in the E36 club, you can always look here.  We just do not want this turning into an E36 club since there were countless more E36's with M42's.  This club was sorta intentionally set up to provide a community for the rarest non-M E30 ever produced (excluding crazy Alpina build & whatnot).
So, in brief:
...no.  We will see how things go as time passes, maybe an E36 sister-site could get worked out someday.