All the planning ahead in the world does you no good if you have to spend all your spells to keep people alive and then you end up w/more encounters prior to resting. That is an example of a class being punished for doing its thing, as has been mentioned in a few other threads and I think at the GenCon sessions.
Lucky to find magic items and 1E should never be mentioned in the same sentence. Players needed to have a castle at level 1 just to hold all the loot they got in modules
"Any sufficiently advanced technology is indistinguishable from magic." -Arthur C. Clarke
There was an old article in Dragon years ago about how D&D would look different if they actually followed the logical extensions of having vast curative, food/water generation, flight, fireballs, continual light, etc. It was very interesting. I know that Ptolus took a lot of the aspects of 3E and followed them to logical conclusions, which I thought was pretty great.