When putting together ITI files based on multiple samples, one of the more tedious parts of it is assigning samples to notes. Using the Sample Map keyboard makes it much easier, but without the ability to drag-toggle the keys to the selected sample, there should be an easier way to assign one sample to a large range. What would make it easier is a "Map Sample to Remaining Notes" in the Sample List on the Instrument page, which would apply the given sample to the selected note and all notes afterwards.
Additionally, when ASSIGNING a sample to a note with the contextual menu, the current sample list only shows the sample if it has been assigned to some note currently. It should show ALL the samples available that have been loaded into the module.