Originally Posted by
WANG
In one of the recent interviews, SE's development team or someone important was saying that TH is generated once the person has created a level of enmity on the particular mob. The amount of TH4's doesn't matter either. Only the single character with the highest level of TH will affect the mob.
So, basically, have a THF hit all the mobs to accumulate the TH capability.
Sorry, I don't have a link, but it's in one of the WoTG threads.
Edit: I re-read your post, and realized you probably read about this already, but for those who haven't, it's a reference to those who don't know about the TH activation.