[X] [Motion] Status Quo. The Xenoparakletor will choose whoever they wish to accompany them on foreign missions.
[X] [Missions] Flexible diplomacy prioritizing breadth and the ability to address multiple issues over focus. [2 missions from winning Demos, then ability to choose 1 more from the losing slates per term].
[X] [Oligarchs] Kymai must be made anew and bury old hatreds [+400 Kymaians go to Nea Kymai, city may have more wealth and political conflict in early years].
[X] [Prophecy] A Tree of Stone, growing in a newly planted grove upon the ashes of ancient monuments [-250 Kymaians go to Nea Kymai, -70 talents, Sibyl will go to Eretria Eskhata, Eretria Eskhata will gain an oracle and cultural influence].
[X] [Oaths] Make Melaina Kerkyra and Epidauros swear oaths to the Divine Marriage [Cities will be unhappy but Epulian League oath will be preserved].
[X] [Lands] Grant additional lands to Melaina Kerkyra and Epidauros [Both cities will be granted new lands by Eretria and grow in population, both will be very happy].
I've been giving this a lot of thought but ultimately I see much greater benefits in having the Oracle settle in Eretria.
While it would be useful to have Nea Kymai embrace the Cult of the Divine Marriage from the get-go, it's not a necessity and the benefits to Eretria that would be lost make the cost simply too high. In my opinion, all the things that having the Oracle in Nea Kymai would provide are much more easily gained through other means than the things that can be gained by having her in Eretria.
Once the Nea Kymai is settled and they're part of the League, the Cult - which is already spreading and growing within the league - will obviously take root in their City, yes it will take a little longer but it will happen due to, for example, the travel between the cities for trade, the League gatherings, the League-wide athletic events held at Eretria. And if we feel it isn't spreading fast enough we can take actions to speed it up. Also, it's important to remember that many of the actions we take for other reasons will also spread the Cult throughout the League so it's not as if we're going to have to 'sacrifice' actions to get this done. Building the new temple complex, for example, we didn't do that to spread the Cults reputation, but it did.
Additionally, while we are colonising the eastern coast of the Adriatic in order to fully dominate it, our primary focus has been and is likely to continue to be Italia. And so to me, the benefits Eretria gains in Italia from having a famous Oracle far outweigh a speedier spread of the Cult in the East. We have here an Oracle already famous with the various tribes and cultures within Italy, how many times have people bemoaned our lack of any diplomatic connection with many of the interior tribes? Well, here's a ready-made way to not only gain those connections but gain them in a positive way.
Furthermore, the extra passive benefits to Eretria itself are substantial and I feel have been somewhat (although not entirely) overlooked in this discussion. Greater moral, political and religious prestige and authority, pilgrims journeying to the city, the added justification the Oracle can give our actions, and again a greater and faster spreading of the Cult within Italia where the majority of our focus rests.
Lastly, it's worth remembering that as the League itself grows it will become more difficult for Eretria to dominate it's focus and direction as we previously had*, this will be especially true with the addition of established cities as we've now started to do (people have even talked about adding Metapontion to the League in the future, although that is almost certainly a long way off). Cetashwayo has already mentioned that some within the League are already looking at Kymai as being a potential counterbalance to Eretria (if not right away then in the future). With that being the case - and a revered Oracle being as rare and powerful as they are - the diplomatic authority, the soft power, that Eretria stands to gain is of massive value going forward.
*I'm not, before anyone says otherwise, suggesting control of the League will be wrested away from us but we have seen and will continue to see some pushback from the other members.