I don't think that it is a question of reform or destruction . . . the doctrines of the WT are for the most part non-destructive. What becomes destructive is their ability to change people's lives and to assert authority. This causes people to refuse blood transfusions, etc. However, in itself, having separate beliefes cannot be construed as bad, even if they cause a separation (look at the foundation of the US - freedom of religion, or the Amish, or perhaps the Mormons, etc. etc.)
So, it becomes a matter of how people are affected by their time in the WT. Or perhaps more importantly, how they affect others. I am affected becaues my wife is a JW and that makes my life difficult. I wish she would see some of the glaring inconsistencies, but she can't. My biggest problem is that the WT is setting itself up as an authority when it is not.
Although this is more a ramble than a post, I will just summarize by saying that it is not the doctrines that are bad, even the blood portion, but the tactics that are the problem (i.e. we are right, everyone else is wrong, hate those others). If people need these tactics, I guess then the JW serves its purpose. If people need to be told what to do, then I guess it's good. Much like any other religion, state, etc., it serves for some but not for others. I wish the GB was forced to accept their humanity. I just can't stand people who are not humble and think they have the only correct thoughts . . .
In conclusion, the WT can be reformed, and it will certainly not be destroyed, but not to make another 'god centered' organization that controls its members. It's just pointless.