Now I understand what you're on about at least, and it seems alright and we at least have an established theory (at last!). But now for one extra question to test your theory out: Why? Why are the dragons (led by Jiub, I think we can leave out the 'St.' now) wanting to attack Skyrim. Do they want land back? or, do they have a reason to hate those from Skyrim? I'm thinking we need to know why they attack before we can call them 'evil'.
It took me some time to grasp Destris ingenuity, but even gentle water (Destric logic) can permeate solid rock (me head) with time.
http://www.uesp.net/wiki/File:TamrielMap.jpg
The Dragons were gone for good, and when they came back they forgot the map in some cave, so they turned left (Skyrim) instead of right (Morrowind) and started spitting fireballs at those cold-resistant nords. Seeing that they were doing double damage, they felt they were getting more powerful, and just stayed there, terrorising women, children and cowards.