I do believe that different boards can and should co-exist, without the mud-slinging between each other. As I see it, there are at least 4 different markets for exJW's: (1) Those who like no censorship whatsoever and are willing to put up with a lot of bashing from other posters, (2) those who like a civil board without the bashing but like to swear a bit and put somewhat racy posts up, (3) those who are more civil still, and are offended by swearing and dirty pictures and jokes, and (4) those who want a more Christian forum.
As I see it, no one board can fulfill all these markets. But, when one board pits itself against the others, their is usually a lot of senseless fighting. And that's what the Watchtower Society likes to see and showcase. I do believe that the new board has a potential to develop into a good exJW site, but not if they are going to blatantly rival this one, or the other boards. That will go big for a while, and then the inevitable trolls will show up and dominate the board. If the administration doesn't act to delete the trolls and spambots, it will end up being dead. And, as has been said, people will end up coming right back to the board that they bashed on that forum--even with the problems it has (no board is perfect, and no board can be perfect for all markets).
Yes, I would like to see more exJW boards on the Internet. But I would like to see more of them cooperate with each other. There is plenty of mud to be slung at the Watchtower Society. And I personally like seeing more boards that sling mud at that criminal organization. I hope that board does succeed like this one did (this board didn't become huge by p*$@ing everyone off). But, if there is nothing but mud-slinging at other forums, then it will not. I personally will wait to see how it turns out before joining them, since I would rather have most or all the mud I sling hit the Watchtower Society.