haven't seen it in person yet so i can't totally say, but judging from the video i've got to say i agree. projections do come off as a somewhat cheap effect. the davy jones projection in pirates is a prime example, to me it just seems totally out of place.
that being said, i think overall its a nice addition, even if the execution is a little lacking. maybe if they were to somehow put the lighting effects within mara itself it would be a little more believable.