The "A grade" game with the brawl referred to earlier was a 3rd division game so these teams would be ranked 18th and 19th in the South West conference - so not a valid comparison to SS. The top 3 teams are St Johns, Wenty and Cabra - so pretty familiar, not SS standard but St Johns have a couple guys that played in last years World Cup.
They are probably a few A grade sides that could be added to the SS sides in premier A grade eg Coogee Wombats and Windsor but South Sydney and Penrith are still running separate comps so it might not be possible to force them to come in.