At the moment we have ourselves, Wigan, St Helens, Leeds, Hull FC, Catalan, Castleford, Huddersfield? Spending I assume full cap (or close to). The only difference in salaries paid out to players will be from teh Marquee allowances that some clubs have.
How many clubs spent the same amount on players as Wigan in the 80's?
In short, It cant be done, and wont be repeated I feel in a salary capped sport.