Ok, I will try to be more polite than you are:
I enjoy reading this thread because most of the users here draw a fine line between what this camera probably
does exactly like other cameras, and
what's really new in this camera.
The JPEG engine as a feature is nothing revolutionary, and will only exhibit evolutionary changes as compared to the same function on other cameras. High-ISO JPG rendering is mostly noise suppression, generally at the expense of image resolution. Since good noise suppression algorithms are very cpu-intensive, in-camera NR will always be a compromise between available compute time and acceptable quality loss. I have yet to see a digital camera whose internal noise suppression is more powerful than any external, well configured PC/Mac-based software (I'm referring to dedicated tools or PS plugins).
Another aspect in a JPG engine is DR: Raw files are recording the sensor's true DR, whereas a conversion to JGPG inherently is connected with clipping. Where shall the clipping be performed, in the highlights or the shadows? Only the photographer can decide that. A one-size-fits-all software can only apply one generic tonality compression curve (I know this problem ad nauseam from my Nikon DSLR).
JPG engines, IMO are only a 'last resort' for those that don't have enough time to process raw files. To claim they can be superior to manual processing is courageous. I admit, however, that Fuji has offered one of the best JPG engines on the market in its previous products.
I followed your link on the same issue, and there are, however two important caveats: (1) One needs to be sure that the camera is precisely nailing the exposure. As a fact, we don't know yet how good the X100's metering system and its metering pattern will be. (2) Direct work into JPG files assumes that image contrast won't be excessive. Especially for those who might be new to digital, the reduced contrast range of a digital image can be a shocking realization: Film is still capable of reproducing a wider contrast range. So, if good shadow detail and smooth highlights are needed in a high-contrast scene, manual post-processing is probably unavoidable.
Film filters (I assume you mean something like a pre-set bw conversion for Tri-X, Neopan etc.): In addition to a specific luminance-based (bw) gradation curve, all these films have a specific spectral sensitivity curve that locks a converted color image into a certain 'color interpretation'. Since the camera will never be able to guess the photographer's interpretation, it can by definition never be better than a manually set bw conversion.
Color film filters: That's a touchy subject and very much a question of taste. I have played a lot with the equivalent sets of settings on Nikon's DSLRs, and most of the time, results will be exaggerated, limiting any subsequent post-processing. I know many photographers who disabled functions like these after the first few days of using their new camera.
Just as wet lab competence is a matter of course for seasoned analog photographers, digital 'light room' post-processing with its specific competences will still be required.
Maybe normal JPG engines do indeed fit the bill for your applications, they don't for my idea of post-processing, and that's probably why this issue has a higher priority for me. YMMV.