It would be great to be able to match frame / reveal in project/ and be able to match back to the source from a subclip that also alows you to trim past the subclip boundaries. When that box is unchecked it is functioning more like a sub sequence than a subclip, where as being able to trim past the subclip boundaries prevents matching beyond the subclip's orginal boundaries and prevents you from being able to match back to the source, which is critical in offline workflows!!! This has been one of my biggest complaints about premiere and has affected my workflow for the past 5 years since I switched from avid!