Drop shadow is working ootb for me.
Don't know about stroke outline, has you tryed Edge Detection? Is a classical sobel/laplace filter, if that's what you are looking for.
Oh, that's a nice way to get the full preview!Create a layer for each screen. Apply slice transform for that screen. Route that layer to the slices in the screen. Apply FX under the slice transform in the layer. That is how I've done it.