First of all, for every -1 you take, you can add one more emotional effect to your Incite Emotion. Since mental damage is already way more effective than physical in most circumstances, adding a physical effect is not a problem balance-wise.
Secondly, as other people said, lasting emotion (+2 damage) and potent emotion (+4 damage) give you a damaging alternative.
Third, generally speaking, the ability to spray attacks costs -1 refresh - you can spread the damage or the attack among multiple targets. The ability to do area effects either costs -2 refresh or -1 but you have to reduce the effect strength by 2 shifts if you spread it over an area.
Fourth, there are stunts and powers that improve attacks. A -1 refresh power can give you +1 to all skill rolls in that skill or +2 stress in general. A -1 refresh stunt can give +1 to a specific type of rolls in the skill or +2 to a very narrow use of a skill, or +2 stress under limited circumstances. Finally, a further -1 refresh can increase range or negate all ranged penalties under specific circumstances.
With all the above options, I have yet to find a DnD special attack that cannot be translated into the system.
Example;
Siren's Song
[-2] Incite Madness plus Ranged - you can incite madness of various strengths/types, doing maneuvers and blocks at discipline+2 at range
[-3] Shatter plus Potent attack - you gain the extra effect to your incite emotion to perform physical sound attacks, with weapon 4
(technically, weapon 4 would also apply to your madness attacks as mental stress)
[-1] Area Effect - you can spread your attacks on an area; for every -2 to effect strength or weapon rating, you can spread it to one zone