I was thinking about the various Playoff scenarios, but am not 100% sure of the method for the 3rd round.
Let's assume the top 4 is:
1. Wigan
2. Wire
3. Saints
4. Leeds
First round, I know we would play Wire at the HJ, and Leeds would play Wigan at the DW .... or Widnes

If Saints and Leeds win those games (quite possible), and then Wire and Wigan beat their opposition from the 2nd round, Am I right in assuming that:
a. We would get the "Team Pick" as the highest placed qualifier from the first round
b. We couldn't pick Leeds, as they qualified from the first round too - so we could choose either Wire or Wigan
c. The 2 teams who qualified from Round 1 get the home advantage
If that's right, then we could potentially play Wigan in the last ever game at Knowsley Road.