The dream week one finals series for me:It would be epic. Both teams haven't played in the finals at the same time since 1941 which is hard to believe. I'd love to play Richmond in a final. Like you said, the melts in Melbourne and BF for that matter would be huge regardless of who wins.
Q1: Adelaide vs Port Adelaide - showdown is the best rivalry in the AFL, I think the Power would get up in a final
Q2: Geelong vs GWS Giants - the two best premiership chances in my eyes. Huge test for both teams.
E1: Sydney vs Essendon - Essendon making it would be very big, and a final against the in-form Swans would make some noise in the lead-up
E2: Richmond vs Melbourne - as stated, I think it could pull in 100k or very close to it. Would be the theme of the off-season on the main board on here.