Moiraine is pretty strong, and she has an angreal. I could find no scene in the trailer with her obviously using it, but even unaided she's no pushover. In EoTW she make a wall of fire across a whole mountain to stop the trolloc army - granted it left her quite drained, but I don't think the trailer made her seem more powerful than she is.
I don't mind gestures - I just hope they don't need to 'gather their strength' to use the Power meaningfully. It will detract from the OP battles where they slice each others flows and try outweave each other.
Fan of Lanfear