We all know that the Inquisitor's main goal is fixing the veil tear and finding whoever is responsible but what greater good will your inquisition work towards while achieving this goal and after it is accomplished.
My Inquisitor's greater good will be individual liberty, here are a few examples of what that greater good would entail.
1) Mage self-determiniation- mages should be free to choose what they do with there own lives, while being policed by either a reorganized Templar order, separate equivalents established by the nations of thedas or the Inquisition itself.
2) Ending the de jure oppression of elves, specifically the banning of elves possessing arms and armor and the requirement that they live in alienages.
3) Ending the state sponsored caste system of the subterranean dwarves.
So as the title says, what will your inquisitor's greater good be?
Out of curiosity, what is your foundation for 'individual liberty' in Thedas? What does it mean, and what is the rational or ideological justification for it?
Liberty, like equality, is something that means different things to different people, and without a unifying principle and foundation it can simply be an excuse for tyranny and oppression by an individual on others in the name of their infringements of her own liberty. After all, forcing restraint on someone is limiting their liberties.
So when you set out to individual liberty (a label that is frequently contrary and contradictory to 'greater good'), what will make your efforts more than the strongman of the hour threatening others to get their way and preferences?
For the issue of mages, how will you justify individuals restrictions on mages with mandated policing to mages who claim that doing so infringes with their individual liberty? And if you restrict mundanes from trying to do what they see as necessary to preserve their freedoms, why should they believe your individual freedoms deserves to usurp their group freedom?
For elves, how will you enforce demands against segregation that is in many respects mutual? Will you deny humans the individual liberty to house, hire, or sell to elves if they don't want to? Will you attempt to prevent them from having any means to push back, or will you strip them of arms to preserve the elves rights to weapons?
When you say you will end the Dwarven caste system- what will you do about people already in castes? Will you overthrow the nobility and kingdom and install a puppet government that reflects your views, regardless of the individual views of various parts of the populace? Will you rend the current castes, and force everyone to take different jobs and specialties at this time in their lives? That would be difficult at best, for a society on a permanent war footing against a constantly present foe- and what would be your measure of success, anyway? Radical change over five days? Weeks? Months? Years? Generations? Destroying the warrior caste on the front lines, replacing the smith castes and other specialties who have no good replacements, replacing the governmental bureacracy- that would be change, but it wouldn't necessarily work out well. But if you leave it to the future generations, you'll likely not see much change: so many people choose to follow what their parents were, especially in pre-universal education settings where family is the primary source of teaching.
I do hope you give it some thought. As it is, your greater good of 'personal liberty' is sounding quite a bit like 'personal preferences enforced on others', and easily allowing rollback by people concerned with their personal liberties and interests.