I hope its the team who wins the league who goes up, because then it is fair. If we have a play off system then that could mean a 4th place team could be promoted which isn't fair.
They need to get a system and stick with it, this needs to be in place for a minimum of 10 years to really evaluate!
It might get a little boring with teams yoyo'ing, like Hull KR, Widnes etc...
I'd rather see a 14 / 15 team Super League with 26 / 28 matches, with 2 up 2 down, but just my opinion.