Regarding to Solo Instruments I see the difficulty of the "right placement in the Hall for everybody". Where would this perfect place be for Solo Strings or a Piano?
Oh there are competitors who solved that "problem" with the concept of "First Chair" Strings for instance. With that concept the Solistic Piano will presumably be located in right in the middle in front of the Orchestra like the Pianosoloist in a pianoconcerto. (However I do not think that compared to complete the sections of a Synchron-Orchestra a Synchron-Piano would have any priority in the VSL-Pipeline)