Varnias Tybalt said:
I don't like the idea that an Inquisitor is supposed to be this uber, superhuman hero.
There is, IMO, a difference between the "uber, superhuman hero" and the "image of what an Acolyte should aspire to be". Every Acolyte, on some level, has the raw potential (the innate doubt and curiosity, the capacity to question and reason, and the will to act where others may falter and to make decisions that influence millions, billions or trillions of lives) to be an Inquisitor in their own right. Inquisitors are, afterall, most frequently chosen from amongst the most promising of their former master's own Acolytes.
An Inquisitor, then, represents what an Acolyte could be - the culmination of decades, maybe over a century, of service to the Emperor's Inquisition. He is at the far end of the path they are walking upon. Consequently, he'll be better than them in a great many ways, simply because he's already been through everything that they're currently going through and more besides - he's vastly more experienced. If he was a Sanctioned Psyker beforehand, then he'll have the skill and experience needed to wield his abilities with as much or more efficiency and finesse than the most potent Psyker in the PC group; if he was an Arbitrator beforehand, then he'll be extremely well-versed in investigation and interrogation techniques, and so forth.
The important bit here, though, is that he's not the hero here - he's the teacher, the advisor, the superior, the stern master and the wrathful judge. In decades past, he would have been the hero, but now he's Obi-Wan to the group's Luke Skywalker - the mentor who gives them direction and purpose, and the patron who gives them the means to better themselves (because they cannot survive if they don't better themselves), and occasionally (very rarely) the powerhouse who fends off the unstoppable foe so that the group can achieve the important part of their mission.
The same can be said about any senior member of an Inquisitor's staff, really. Even if an Acolyte doesn't quite have what it takes to be an Inquisitor at some point down the line, those who serve their Inquisitor most closely and have done so for the longest can (and should) still serve to represent what the players can aspire to.