As is there are plenty of spams and plagiarism already in the forum. Tokenizing the forum would simply increase it multi fold. There is only one authority for Bitcointalk.org and that is Theymos. Hence, there is no point of extending the authority. There are quite a few other more important things to implement than something like tokenizing the forum. I vote for 'No'
Here we go again
By how much can theymos extend his authority, or rather the authority (or dominion, or supremacy) of the forum, into the external world on his own? I don't think that by much since otherwise he would have done so long ago. Satoshi did that with the help of Bitcoin. The forum supported Bitcoin, though you can think the other way too
But by now it has lost its imperative in the cryptoworld. A forum blockchain could help retrieve that momentum by reintegrating the forum into the changed environment at a new level. I understand that change can be difficult and even painful but sometimes it is required. Really, if Bitcoin is not about change, then what is?