there arent jobs but maybe its possible to add the job in characters as normal characters. i mean, there are 6 characters (titan, knight, healer, mage, rogue and sorcerer), if we were able to add 6 new characters (titan-highlander, knight-royal, healer-cleric, mage-wizard, rogue-? and sorcerer-?) then we could duplicate the other characters and giving the different weapons and lvl 31+ skills. so the first 6 characters would be warmaster, templar knight, etc and the other 6 highlander, royal kngiht, etc
no bonus on item upgrading but you can increase the upgrade rates and allow hs to go up to +20 for example