Yes they would, but Freo would clearly prefer to avoid a derby final and play a travelling North, Tigers or Bombers.
I for one, would love to see a nothing to lose WC playing against a rampant favourite in Freo. Fair chance there would be some sore and sorry boys on both sides in the aftermath.
If you finish top 4 you have to give yourselves every chance of making the GF, that has to be the goal. Top 4 finishes don't come about all that easily so you have to make the very most of it when they come. I wouldn't say you have 'nothing to lose' just because you'd have exceeded expectations from the start of the year.
Long way to go though, even if WC don't finish in the top 4 a home final would still be huge.