So let me get this right, no matter how you conduct yourself during the main game, even to the extent of ignoring the plight of ordinary people, the reaction of Teagan to you is pretty much exactly the same? I find that somewhat disappointing. To be honest, I think if you put it to a vote of the commoners of Thedas, they'd want the Inquisition to stay in Caer Bronach since no one was doing anything to help them until the Inquisition showed up. I could understand it if we had even a few complaints from the monarch and Teagan during the main game but, so far as I am aware, the only noble with a complaint was that one who wanted us to move the refugees from his land and instead I helped them stay.
The strange thing also is that we are told our army rivals that of any ruler in Thedas, yet apparently we aren't strong enough to hold out for keeping our entire organisation intact. The fact is that on the evidence Thedas does need an independent organisation helping resolve problems for the ordinary man in the street, because Ferelden nobles don't seem to care (you even have to get Orlesian nobles to go with you to persuade the Templars - which I always thought rather odd since it was deep into Ferelden) and the Orlesian nobles are too caught up in their game. We dealt with enough bandits and hostile critters, that had nothing to do with Cory, to demonstrate a need for our presence.
As it is I am only sorry that my disband speech couldn't have been even more strongly worded than it was, together with a "V" sign as I left the room. I know it isn't a traditional sign of derision in Thedas but we have just celebrated the anniversary of the Battle of Agincourt and my favourite Inquisitor is an elven archer.