I read that the Ebonheart Pact is led by representatives of equal power from each of the three provinces. I could be giving the Tribunal too much credit but do you think there is a Nord or Argonian with power to match one of, or all three of the Tribunal? I'm not saying it couldn't be, but ESO takes place a good while before their power was diminished and they started to go a bit mad. I'm also wondering if Vivec and Sotha Sil will have as large of a role as Almalexia will.

Even though TESO isn't exactly lore-friendly, I doubt they'd imply any mortal could be more powerful than the tribunal, especially during this time period. It is much more likely that the dunmer will be represented im the ebonheart pact by a hortator or something similar. ALMSIVI will make an appearance, obviously, but they wont directly intervene in the war effort unless morrowind itself is somehow in danger. They are RELIGIOUS leaders after all, and dunmer have always had their own political leaders as well.

While we're on the subject of morrowind, was it even called morrowind in the second era? I thought it was called Resdayn. Off topic I know but that thought just came to me.

I'm pretty sure it was called Morrowind back then. I think it was called Resdayn way back when Veloth led his followers there. One of the videos from the main webpage states that Almalexia is the rep from Morrowind. I should double check that.