I think you should keep it, my names a bit silly but I'll always use it on the internet.
I don't think it's silly. It sounds like Warren = War 'n = War and. Then, I read the Jeeves part and it sounds like the classic servant's name and think "Service". So all together it reads "War and Service" which sounds pretty cool to me, but that's probably just my brain spitting out nonsense.
With few exceptions, true suppression, repression and oppression is often fueled by fear, not by logic or reasonable morality
Post count means nothing compared to your reputation. I've known some uber-respectable people with low post counts and some complete geeks with over 20K posts.
It's your "old" personality and reputation you're escaping. Concentrate on establishing a new reputation. Post count will come in time. Respect will come almost immediately if you're doing this for the right reasons.