I don’t know if this is the right place, but to me neither sharpening nor noise reduction is necessary for Filmulator. If you add sharpening, you must add noise reduction because without NR sharpening is useless. But other programs can do this job in a wide variety, so why adding it?
Filmulator is small, fast and simple and mainly does what I would expect from a raw converter, particularly producing images that are perfect for working on.
Nevertheless, the developed images need a final retouch in Gimp or maybe another program. It would thus be great to have an option to open the final image directly in Gimp as Tiff. Perhaps you could borrow it from darktable or RawTherapee?
Futhermore, a colour picker for White Balance would be very helpful because adjusting WB by sliders is very inconvenient and error-prone.
And it would be great if the Exif informations would be handed over…