It isn't just an issue for the factions to decide.
If it were, it wouldn't be on these forums.
If I be right, I'm assuming Dieter is looking for this to go into the mod lore as canon.
This makes it not just a player faction question but an entire NPC faction shift.
We're basically talking about the Mollys accepting a divided Dublin, instead of an independent Dublin.
As much as I'd love to use Ireland in the real world as an example, the Mollys aren't in any kind of similar situation really, aside from names.
The Mollys are the majority in Dublin but they are still a minority compared to Bretonia.