After eating these over the last week I think I'd make the following changes:
The chocolate flavor in the pudding layer isn't that strong and the texture isn't the best. I think I'll use softened chocolate ice cream for the layer next time. The marshmallow layer is delicious and the texture on that is really good. I think I'll increase it a little bit next time. I might also dip the bars in melted chocolate once they are cut but undecided on that.