When older members take it upon themselves to compete to see who can provide the most ridiculous hyperbole in reply to an innocently intentioned posting by an new member no matter how inappropriate that posting might seem, it does not provide a very welcoming atmosphere. Moreover it will tend to blacken the reputation of the game itself as some of these people will just leave and tell everyone wherever they go "Oh Ya, What a bunch of Putzes. You don't want to try that"
Now I am an ornery kind of guy and I took my lack of welcome as an excuse to fight, heck, I argue with Zanzibar so much I might as well marry him! Other people are no so disposed. You want to pick on the people who have been around and shown a willingness to fight back be my guest but lay off the newcomers (even if you think they are just somebody familiar's sock-puppet.)
EDIT
I'd even make the 5 post deletion limit retroactive and forgive you 1 deletion per day served or deletion free upon your return despite the fact it would affect me. That way if you have 100 deletions you'd be gone 96 days and have 4 deletions left on your record when you were allowed back. Of course I do not think this will be adopted.