currently, the audio that travels through patchwork cables is a mono signal, so the only way to get spatialized sound is with separate speakers. we have work planned for the future to allow for a stereo signal chain, which will achieve what you want more easily, and properly support stereo content in fusion patches.
which fusion patch settings are you looking to have exposed? some of them can be adjusted at runtime, and others currently cannot. it would be interesting to hear some examples of what you have in mind, as we work on plans to better support users.