R/L will go nowhere until they get rid of the salary cap.
I understand it would initially benefit teams with wealthy owners or directors of some clubs but then it would be up to other teams owners to look for investment if they feel the need to catch up.
The game needs to have a lot more superstars which in time will attract more terrestrial tv coverage.
As better players come into S/L a lot more average players will then make their way into Championship teams making that league a lot more competitive
More money in the game given time would also attract a lot more young players into the game from outside the traditional R/L areas
Its not an overnight fix but whilst we are fixed in a capped sport there is no real growth potential