Should there be at least a promotion/relegation playoff to allow a path to the Six Nations? Absolutely, as soon as possible.
Are Georgia and Romania ready for the Six Nations? Not yet probably, but they can't ever become ready without a way to the top. You simply cannot progress any further without better tests and without playing in a better competition. I don't think GEO/ROM would win the promotion playoff now and even if they do they would record some heavy defeats in the 6N due to a lack of squad depth. But eventually promotion would happen and in time these nations (and others) would get used to the higher level, creating a much more competitive European rugby environment.
The real issue right now is off the pitch. GEO/ROM are Eastern European countries with weak economies, especially Georgia. While Georgia got 50 thousand people in the stadium for today's match, they only paid like 1$ per ticket, so the commercial potential is very low. When they had a tournament with 5$ tickets some years ago, they couldn't sellout a stadium with 2000 seats. In Romania fans pay 5-10$ for a ticket but attendance at national team games is only 3-5000 people. But again, the prospect of the Six Nations would hugely boost interest, sponsorships and ticket prices.
The ENC is a good example of the benefits of promotion/relegation for rugby development. The ENC consisted of 6 teams, of which 5 used to never get relegated (Georgia, Romania, Russia, Spain and Portugal), while the 6th team would promote for one year, record some heavy defeats, and be relegated fast (among the teams that promoted are Belgium, Ukraine and the Czech Republic). Germany promoted a few times and got relegated but the added experience helped them. This year they beat Portugal and drew with Spain so they will stay up, with Portugal (a former RWC nation) being relegated while Belgium promotes again. In time, maybe more nations will climb up the promotion ladder from the bottom tournaments.
At the 2015 RWC, Italy beat Romania by 10 points (Romania only had 4 days of rest), after a match in which Romania dominated both territory and posession. Does this 10 points margin justify the HUGE gap in the opportunities that Italy and Romania get? Italy are a part of the 6N, Pro 12, RCC, Challenge Cup, top junior tournaments, full Tier 1 test schedule every year (even vs the All Blacks). Romania is not allowed in any of these tournaments and we haven't played a single Tier 1 test in TEN YEARS! Does this sound fair? How can Romania possibly bridge the gap without any opportunity to play quality opposition?
Btw, surely the Six Nations will be reformed sooner or later but I hope they will not choose to just invite GEO/ROM or both and create a ringfenced 7N or 8N. The path needs to stay open, so if another nation becomes competitive they will not be locked out like we are today. Russia, Germany, Spain and any other country in Europe shoudl know that if they decide to invest in rugby and develop the sport, nothing will stop them from playing with the best.
Sorry for the long rant
