All the melee options seem geared towards PvE more than PvP. I know the Nightstalker's smoke bomb isnt really a melee but it has good PvP options available to it, envenomed and snare for example. Hell Warlocks can increase their melee range even further for PvP. Titans only really have Stoke The Forge. Not a bad ability, but just a little weak compared to other classes.