John Morrow said:
I would argue that at least some of those complex situations will play very differently if the players have a good grasp, going in, of how things will be mechanically resolved instead of having to rely more on a GM's subjective assessment.
While that's true, consider that every NPC in the game chooses to act, essentially, by GM fiat. So that leaves a huge portion of the game in a kind of mechanics-free space that relies on a GM's judgement, rather than on any codified system of task resolution (and on an open line of communication between players and GM).
To varying degrees the rules system can describe what a GM
can do with NPC's (or any form of obstacle/encounter), but not
what they do. And in that there's no escaping a reliance on the GM's subjective judgement calls.
In light of that, quibbling about an extra +2 circumstance bonus applied to a Jump check seems, well, to miss the point.
In fact, I think the GM subjectively assessing the players' plans can create quite a few very real problems.
I'm not trying to be difficult, but can you suggest another way for GM's to assess things, other then subjectively? I'm not a robot or an algorithm. While I try for a degree of objectivity, I have to be honest with myself and admit I fall pretty short. I'm only human.
All of these problems are caused by the GMs subjective assessment of the challenge being based on things other than the setting and situation.
I don't accept that. Most of what you list aren't problems (level-appropriate challenges?? rewards for creativity?!) unless taken to an extreme. And even a GM who limits their assessment to 'the setting and the situation' are making subjective judgements. How can they not be? How did they obtain an objective frame of reference?