This is just a very quick one shot example of the difference between Fujifilm RAF, the Camera JPEG (Astia) and the new Lightroom 5.4 Astia film simulation mode.
As you can see, it does a pretty good job, but there are still differences between the camera JPEG and the LR5.4 simulation of Astia. The shadows are darker in particular, but you can see in the side-by-side that it pulls more detail from the file – particularly from the roof in this case and perhaps because it was a high-ISO image, so may be worth considering.
Obviously this is only one image. I’ll try to do more when I get the chance.
Image order below – RAW first, Camera JPEG then the LR5.4 Astia simulation – side-by-side.