The value of having a guy answer the bell isn't to act as a deterrent, it's for team morale. There is nothing more demoralizing than having your team getting run all game long, smacked around and beat up - all while taking a verbal onslaught to go with it about what a bunch of chicken**** cowards you are. Throw in losing to that mix and you've got a horrible environment for the players.
If this team is on the verge of a Stanley cup, absolutely put a Dorsett in the press box if there are better players that can slide into his roster spot. But if you're a middling to poor club, you absolutely should have toughness on your roster to stick up for teammates and settle scores IMO. Because the difference between having a Dorsett or Mason Raymond on your 4th line is marginal. Won't change a thing in the grand scheme of your season.