Hi Andi!
Sorry for the late reply. Thanks for your response. I am curious, was the solution offered in the Optimizing Sib Playback Doc pre-VIPro 2? Because the solution I suggested above (using Sequence Map) works 100% of the time without any further editing. Please forgive me for this criticism, but having to edit every single pre-legato note using the inspector is just far too difficult and time consuming to be practical, and changing the interval threshold just doesn't really work. I understand that this really is Sibelius's fault for making such a clunky note editing system. It's too bad because as a notation program Sibelius is pretty awesome. Perhaps VI (non-pro) can also include Sequence Map as a feature, and the definitons can be reworked so that everyone can do this. I can't imagine the hell you went through trying to work with Sibelius's incredibly complex playback dictionary.
Thanks again for your time, and best for 2015.
MOH