Was thinking about just what you suggested. I think the playoff, not for a spot, but to prove the ability to take a spot makes sense. It is a huge move to punt someone who may or may not be the sixth worst team in Europe.I think Georgia would have a strong case for playing a home & away series in November against the bottom-ranked 6N side (aka Italy) for a spot in the following tournament. I'd also like to see a T1 nation or three add Tbilisi to their EOYT itinerary.
And the best bit of news was, of course, in Dublin.
Wales reckon the subbing of Uini Atonio towards the end of the match wasn't quite kosher:
http://www.planetrugby.com/news/davies-howley-suspicious-of-france-substitution/
Six Nations are investigating:
http://www.planetrugby.com/news/six-nations-investigating-atonio-substitution/
Short version: French AC left the coaches box & spoke to their doc who shortly thereafter went on field & took Atonio off for a HIA, allowing the previously-subbed Slimani back on for the final few scrums.