Perhaps a better solution would be to create an inherent power (preferably without a stamina requirement) that causes the AoE effect via your attacks. That way you would have a semblence of control over how it effects the enemies.
I.E. You're about to begin a fight with a large group of enemies, so to keep them off your allies or to attract them to yourself, you switch on the inherent power called something like 'Fists of Agression'. The FoA causes any attack you use, ANY attack, to bring agression to you within an AoE distance (around you or from where your fists are, that's not the issue at the moment). Suddenly you notice that, say for instance, an ArchVillain is incredibly close to the group you're beating to a pulp, and you no longer wish to taunt anything nearby. Then you shut off FoA, the taunt effect disappears, and you have your control.
I would say this is the best course of action for those early levels. If nothing else, it gives you that slight control that you would feel you need, while giving everyone else what they want.