I would agree if the hunter had a perk that give him 4 golden shots(without exotic) or if the warlock had a perk that gave him two nova bombs... But they don't! Honestly the Titan having 4 hammers is already good enough especially with their mobility. Yes they don't have the mobility of a gunslinger but they make up for it by having one extra hammer, and plus if they stand on a sunspot the get a over shield and more hammers what's not fair about that?