Boraxo |
I think that you are right to say "cut down on the savagery of the process," especially if they are not playing an evil-ish PC.
All the inquisitor needs to do is use the intimidate skill rather than diplomacy to get the answers they seek. I think that is the purpose for the Inquisitor's bonuses to Intimidate and Sense Motive.
As DM, you may allow a bonus to the check depending on what kind of additional pressure is used, and I seem to remember my DM ruling that the first check requires little time- like a standard action, but if I want to get deep into torture then it requires multiple checks that take time, say 1 hour or more, but the actual methods are hand-waved as you try to break down the target's will. I don't recall if it came from some source, or if it was just his ruling on the fly, but it makes sense to me.
My LN (borderline LE) Inquisitor of Asmodeus has only ever needed to display his "interrogation instruments" (masterwork tools for a +2 bonus) and role play something to the effect of "my divine mandate requires that I use any means necessary to discover the truth of your words, and I will have the truth one way or another." Then its just roll the skill check followed by discern lies or sense motive.