I think we agree that Mary is now safely in the arms of her Bridegroom (meant as purely as that concept could be stated, not salaciously), and therefore she is now fully sanctified. Where do we find the need to have someone of higher ranking appeal to our Lord, if there is only One needing to intercede for me between man and God, the Man Christ Jesus? How does Mary actually improve that communication? And, does this mean that Mary is in some sense Omniscient or at least All-seeing? Does RCC tradition teach that the dead are in some sense sitting in a stadium watching the earth? What are their limitations? If you use the Hebrews text to support this (”...surrounded by such a great cloud of witnesses...”), I have a grave disagreement that this broad interpretation fits the intention of the writer.
Second, the S vs. s. You are the first RCC I have been in contact with that acknowledges that there is “s”. But, what I cannot catch, is whence cometh the need of “S”? This is not outlined anywhere I can find in Scriptures, so is this again a product of “tradition”? I don't question that your organization has set a high bar, but that doesn't demonstrate that it is appropriate. The whole matter of elevating some via human observation does not seem appropriate. If the end result of these inquiries are simply, “Trust us, we are the final authority because we are the final authority.” then, I will respectfully disagree.