I don't really follow any of this. Because I don't know where you think player goals come from - though I get the sense you assume they come from the GM and the GM's story[./quote]
The PC's interact with the setting and set their goals in doing so. I may have a good ability to predict their goals (will you be surprised if your players who worship the Raven Queen take action to a threat against her?), but the players set their own goals. Altruistic PC's, if such were a requirement of the game, would set altruistic goals, or so one would expect.
- I don't know what you mean by "tactical excellence". Do you mean something like "mechanical efficiency in achieving the goals set for the PCs by the GM"?
I mean "the best tactical approach, with no influence from the character's personality". If any deviation from perfect tactics is a death sentence for the PC's then they will always strive for perfect tactics, whether or not it is in character. The Dwarven Berserker who loathes Goblins will nevertheless bypass the Goblin Guards if his best tactics are to attack the Human priest leading them.
I also don't know what you are talking about with "rewards". Upthread you suggested that Glabrezus won't do something for nothing, just as PCs typically don't. Now you seem to be asserting simply that both Glabrezus and PCs act for reasons. The first point is wrong in my experience. The second point is banal.
The PC's have goals - doing something to advance those goals is not "doing something for nothing" Same for the Glabrezu.
No, they planned the heist, so they should at least be allowed to attempt it. They planned the Demon summoning, SUCCEEDED at the demon summoning and the DM then cheese weasels his way out of that success by exploiting a loophole in the mechanics (Demon can only do it once/month) that, if a player does it (Astral Projection to get infinite wishes) is the sign of a poor player. Why is that not a sign of a bad DM?
Until the MoP ruling, the manner in which charged items interacted with AP was not set out in the rules. An expectation of infinite wishes was unreasonable. The MoP ruling eliminated any argument that the interpretation with an unreasonable result was correct. That a Glabrezu may grant a wish only every 30 days implies a possibility he has used this ability in the past 30 days. The likelihood depends a lot on how easy we think it is to get a Glabrezu to grant a wish.
The whole Demon summoning thing came up because Wicht insisted that you cannot use a lower level spell to cast a higher level spell. That is now proven false. You can Planar Bind a Glabrezu, yes? You can get a Wish from that bound Glabrezu, yes? Thus, you can cast higher level spells by using lower level ones. End of story.
As Wicht notes, you did not cast the spell. The Glabrezu did.
Agreed. For what it's worth, I would probably roll dice to see if the glabrezu had granted a wish recently, something like "Roll 1d100. That's the number of days that have passed since the last wish-granting. If it's 30 or less, the glabrezu can't grant your wish today." Then the players can decide if they want to hold the glabrezu in the circle till its ability recharges; send it back and try again with another random glabrezu (re-roll the dice); or give up.
Seems a reasonable approach. No reason a CE Glabrezu hauled off to this plane against his will should share that info, either.
There's nothing wrong with trying to get a wish via planar binding, but it comes with a lot of hazards, and the possibility of the glabrezu having already used its wish is one of 'em. Another, more serious hazard is that you're getting your wish granted by a freakin' demon! Better have a good lawyer* on hand. I generally feel that DMs shouldn't twist the wording of wishes unless the player is being unreasonable, but when the wish is coming from a creature that is literally chaos and evil incarnate, all bets are off.
I like the approach that the source of the wish matters. A benevolent grantor will interpret the words to the wisher's favour. We had that arise some time ago with a character in mourning for his deceased wife wishing "to be with her once again". The wife was restored to life. A neutral grantor would probably kill the character. An evil one might teleport him to her moldering corpse.