I really want this game to be good.
But this part concerns me a little.
Unfortunately for you, the holes spawn all kinds of nasties like undead and the mages and Templars are too busy fighting each other to deal with the problem.
That is essentially the plot of almost every Bioware game it seems. "Big evil that logically people should be uniting to fight, but inner conflicts mean that it's down to you instead". If we have to convince the Mages and Templars to kiss and make up to take on the bigger threat then it will be terrible. That is pretty much the essence of both Mass Effect 3 and Dragon Age: Origins.
Especially considering how they also like sticking you as a part of some kind of special Order to do so. Spectres, Grey Wardens and now the Inquisition. The idea seems solid, but if they are re-treading the basic plot of their other games it's going to feel far too similar.
Naturally it is too early to say for sure, but I hope they are a little bolder with the storyline.