More utility than what? Death Grip? Trinkets are not utility. DK's are literally the worst peelers in the history of this game since WoTLK ended. DK's have Death Grip and only Death Grip to peel. Remove DG and give us some fucking utility and I'd be the happiest DK in the game.
beside death grip you have a guaranteed stun (no parry / dodge) or root / silence, and a 60% slow. if you want more play rogue or a caster
dks should not have the utility your utility and your peels is your damage. force the enemy team to play defensive