The fundemental question that needs to be answered is whether you want a league set up to be for the betterment of the game and the national team, or do you want a league set up to satisfy the demands of all the member clubs. The two are very different things. At the moment we have a sort of half-way house system trying to please both camps, and I really don't think it's working.
How is alientating all clubs/fans of non-SL clubs, good for the game and the National team?
If you assume that non-heartland teams could be ring fenced in a P&R system, then the only clubs benefiting from this nobhead franchising system we have are Cas, Wakey, Salford and Bradford. Are their crowds much higher now than they were under P&R? Compare that with how poor crowds are in NL1 (compared to how they would be with P&R - Widnes V Leigh was half of what it would have been with P&R - check the equivalent fixture in the early 2000's)
To be honest I think that strengthening the club game in the heartlands and in pastures new, is the best way to help the national team. The only way to do that is to have a proper pyramid structure in place