Healing won't matter if you're not strong enough to phase push in 2-3 turns. Assuming the opening post is correct, the regular overdrive debuffs that prevents healing and stops cooldowns will be an issue for new/weaker players. Chaos magic isn't useful either. If you're struggling to push regular mode, it's useless and having others help to push into rage, it'll be overdriving constantly, rebuffing itself because of other players and its long rage phase.

PP should not be priority for a new player, clearing is.