Great topic Dragoș, a lot of info. To make the picture a bit more complete, i'll write a bit about the lower divisions from the Romanian rugby.
Divizia Națională de Seniori- 2nd division
The league below the professional SuperLiga, contains 7 teams (should have been 8, but Buzău retired due to money issues, just before the start), (most of them) with semi-professional status (the players receive some money from the clubs, but they have an other occupation- work or studying).
We have traditional (old) teams, like Poli-Agro Unirea Iași (formed in 1969, old contender from the SuperLiga (from my info, the team with the biggest budget from the 2nd div), CSM Bucovina Suceava (formed in 1963) or Știința Petrosani, which played for the first time in the top division in 1960. Also, there are some new teams like Galați or Bârlad, which were formed in the second part of the 2000's, but from cities with some rugby tradition & history.
Many of these teams (&players) have 1st league experience, some in the SuperLiga and many in the old system, before the fully professional era.
The players are very young, almost all the teams have an age average around 22-23 yo. Many of them are students (university), hence most of the teams are based in cities with strong university centers (Iasi, Arad, Petroșani, even Suceava & Galați).
Petroșani earned the right to promote to the SuperLiga on various ocasions, but they weren't able to make the step, because of some money issues.
Divizia A- 3rd division
The bottom level of the league system, Divizia A is an all-amateur league, all the players have jobs/school, even if some of the teams offer money bonuses/prizes. There are 8 teams in a two geographical groups. After the regular season, every team plays a play-off with the correspondent placed team, from the other group, to determine the final standings.
Again, we have some old-traditional teams: RC Grivița (mentioned by Dragos above), founded in 1932, CFR Brașov (another team of the railway workers, besides Grivița & Rapid)- formed in 1968 and some newer teams like Lions Arad, CSM Sibiu.
Top flight experience does not lack in this league, Mangalia, Brașov and of course Grivița played in the top league, some of them in the late 2000's (Brașov in the 08-09 season).
Similar to the 2nd Division, Brașov did promote on the field, in the last 2 seasons, but is unable to promote to the 2nd league, the lack of funding hits again.
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The attendance at these games is between <100 and some 1-200 spectators per game, depending on the veneus and the teams.
These legues benefit from the awareness of the SuperLiga, all the games/tables + info get their place on the official site:
http://www.super-liga.ro/.
All amateur (non-league) tournaments:
In the last years, a number of amateur teams got together in some very good organized tournaments: 10's, 7's or beach rugby.
For example:
http://www.arlechinii.ro/after-work-rugby-10s-series-2013-etapa-1/, managed by the Arlechinii Bucuresti Team.
Also, we have a range of 7's and youth tournaments, but i'll talk about them in another post.