Thank you, Darth. That answers another of my questions.
Anyone know the answer to another of my previous questions?
"Also, are the Synod mandated and overseen by the Empire in the current time-line?"
In other words, do they take orders from the Imperial government?
Completely unknown, it's very likely though that there is at least some imperial influeince in the guild. The Empire would be crazy not to have it. Then the CoW describes them as primarily a political group which again makes it very likely that they have ties with the Empire.
And the questions keep coming. If I want to get the Player involved in this investigation as an "observer" in an official capacity, what would be a feasible way to do it? In other words, I want the player along with the wizard sent to investigate and privy to most things that get discovered by the wizard during the investigation. But I'd rather it be a straight-forward stream of information, not necessarily gained by subterfuge or under-handed means. I'd like to have the Player there in a "official" capacity of some sort.
Obviously, if the Player joined the Imperial cause in the Civil War quest-line, I could set it up so he/she were delivered an Imperial missive to accompany the group to the Island as an observer. But what if the Player has not chosen a side in the Civil War quest-line, or worse yet, had thrown their lot in with the Stormcloaks? Who could get the Player assigned to this group? Who has enough power to get the Player on board as an observer if the Player has chosen another path apart from the Imperials? Would the Psijic Order dare to do that? Do they have any power to do so? Could they do it?
Now I realize I could go many different routes in getting the Player into this group, but I'd much prefer it if the Player were along in at least a semi-official capacity as an observer. If the Player has joined the Imperials, then I don't see a problem. If NOT, then I do see a problem to skirt around.
I can think of no way that a stormcloack supporter would be asked to join this expedition, unless of course it could realy hurt the Thalmor. The Empire and the stormcloacks would have good reason to both want to stop the Thalmor. It would still be unlikely, especially if they consider the artifact to be unimportant at first.
The Psijic order wouldn't intervene at all either. They have no representation in the Empire, haven't had it since the days of the last Septim, and especially after dissapearing you aren't going to see them much. I can't imagine the CoW having that kind of power either, as they are practically powerless inside of Skyrim let alone stand outside of it. The Thalmor would have that kind of power, but they would have no reason trusting the player. If I were you, I would make the quest start from two different options.
1. Stormcloack
2. Empire
It's the only logical thing I can think of, but then I can see no reason why anybody from the stormcloacks would invite the Synod.