Technically sound-However...
The trailer was technically sound, however, from a viewer standpoint, the fighting will have to be excellent, and original. One of your major drawbacks is that you are using stick figures; but there is a large collection of stick figure toons already, so that does not mean much. As long as you deliver smooth movement which can be tracked easily, you should do fine. I would also suggest that you be careful about dragging a character along a background it blends into. Otherwise, I look forward to it.