The only reasons to do Dreadtooth (DT) are: the title ("Drouk Hunter"), the mask and possibly the amulet if that is ever confirmed to drop off him.*

*Seriously, does 5+ stack DT drop the amulet or not???

P.S: This is one of those threads that makes me happy to be on Jung Ma. Section X peak pop hasn't broken 60 since the first 48 hours of 1.5: makes doing DT seamless.