"Need" is a highly subjective word for a class that most of the time heals, buffs, and rezzes people.
Also for what it's worth, any competent puller (including ench's) will fight the cleric tooth and nail to let them pull for the group. It's an all-eggs-in-one-basket situation but more than that trying to reframe the team dynamic. In P99 most people are pretty locked in their ways...just let them do it the way they want to do it. If you have an unique small group thinking outside the box then sure, figure out any other system and have fun.
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