Hypersmurf said:
I could go along with that.
AoOs are a metagame concept. The in-game concept is "Drop your guard, risk getting hit".
The player knows that he can use his Luck Domain power to reroll a check once per day. How does the character know what number just came up on the d20, before he decides to use his power?
It's like how a 15th level wizard with 119,900 XP can cast Limited Wish, but a 16th level wizard with 120,100 XP can't. The player knows why, but how does the character explain it?
-Hyp.
AoOs are in-game concept, hence the popularity of pole arms.
That stance makes any and all AoO based characters, like a glaive wielding character with combat reflexes, an artificial concept. They just get to hit more often? Characters know there is a benefit, else they wouldn't go through the "special training" to get the feat.
Luck domain can be represented, in game, by the character really wanting something to go right. The game rules behind that is a re-roll. There is a clear connection.
I also don't think the XP example works, because you can not de-level yourself by expending XP. So the 16th level character can cast limited wish, enough to put him to 14th level XP if he wanted, but he still needs 136,000 to gain 17th level. I'm not sure if it is a house rule or an interpretation, but it is the way I have always played it.
Any time the rules get in the way of game world functioning logically, it harms suspention of disbelief. Being able to cast a spell one day, and not the next is a good example.