Yeah you're right ExSport, the codec installation is why it will never be at the top of the engine list by default, but for those of us who do have codecs installed it is the option that is least likely to cause bugs.
The other points can be changed, though. It can be programmed to use the audio and subtitle preferences, and DTS, if we just use Avisynth to generate the video then use MEncoder to overlay subtitles and send audio in a different process. The code is already there in the program, it just needs to be pasted and linked to the relevant areas.
