Some of you might have read Grognardia a short while ago, where a quote from Ken St. Andre was commented upon. I liked it myself and nodded in agreement until I thought some more.
If this snippet of wisdom from Ken St. Andre should work in play, you would have to train your players!
I have tried to use dopplegangers as a monster in play. It failed miserably, since the players didn't trust nobody. Guess what happened when they found someone chained in a dungeon asked to be freed? Guess how likely they would have been to act like Ken suggests?
In order to have your players try to talk themselves out of troubles instead of just charging into a TPK, they need to be trained to do it. Old School play is not just a feeling, and this proves it. Any kind of dungeon dressing, or any kind of "first edition" monster collection can be brought to the table without any old school play happening.
Few xp for monsters but much xp for gold is an excellent way to achieve the training I'm talking about. I'm beginning to wonder this was removed from T&T? Yes, it was in there back in the beginning. Ken once mentioned it was taken out, so unless I misunderstood him it should have been in there.