You're right, it was late when I made that post sorry about that. The following decisions were made at the Gathering following Thosha's guide:
Day 1: "Hint for Esthera to call out", "Support Anak Xerces", "Remain silent" and "Extend olive branch to Lustlord"
Day 2: "Prioritize attractiveness"
Investigate Skullpounder's chambers
"Reduce slave presence"
Orcent lost in round 3, elites won all 4 fights.
Day 3: "Expensive or Chilling", "Join the Empress', "Big spiky dildos"
Day 4: "Approach Mestan directly"
Loot all 7 chests, complete race in 45 seconds. Got best prize.
Day 5: Attack Nyst twice (east), talk to the Empress "Take territory", talk to Mestan "Tell him to fend for himself", Talk with the Lustlord "Don't attack", talk with Anak twice "Give Xestris mana", talk with Tanurak (make him leave), talk with the Lord of Blood "Temporary truce" and attack Fuzkao. Interact with your shining spot to proceed.
Investigate LoB. Allow the Ritual.
Day 6: "Favour Rodaken dishes". Investigate Lustlord
Day 7: Kill Lustlord fuck Esthera.
The results from these choices ended in the best results from the Succubus Council across the board. The calculator says I am one point shy of getting the slavery treaty but I did in fact get it.