I typed up a very long post but lost it. Oh well.
Basically I have reviewed the WTCDrom and they only say Nimrod was bad because the Jewish Targums and Josephus say it. Of course, they don't discuss all the other things those documents say.
They insert "in opposition to Jehovah" into Genesis chapter 10 for effect. It works - for dubs. The word "before" #6440 literally means in front of someone or something's face. There is no character added into it. It doesn't imply Nimrod being evil before Jehovah's face. In fact it means he did his hunting openly before Jehovah. The word #6440 is used like 2,100 times in the OT. The society references about 6 of them to support adding "in opposition to Jehovah." I reviewed each reference they gave and it makes no sense. You can insert the simply word "before" in every case and it sounds perfectly fine. The translators may have made word #6440 "against" instead of "before" but that is a translators perogative. It doesn't change the basic meaning of the word.
I'm appalled that I didn't catch this deception earlier.
My vote is that Nimrod may be guilty or innocent of the things ascribed to him. We don't know and presenting it as factual is dishonest. Unless someone has newer information that 2,000 year old Targums and 2,000 year old Josephus references to 2,000 year old oral traditions.