Hussar
Legend
In your example an action point is simply a temporary boost from extra effort that allows a character to perform certain tasks that he/she is already capable of a little bit better.
I don't see anything here that requires action outside of the role.
But, you see, there's a problem of timing. Action Points are applied AFTER the die roll, not before. There is no "extra effort" possible because, well, the effort is already done.
I would also point out that Action Points, at least in Unearthed Arcana also allow you to retain a cast spell. If you spend the AP, you don't lose a memorized spell (or spell slot) after casting. What kind of effort allows that?
In addition, I can spend an Action Point to gain the benefit of a feat that I don't actually have:
SRD said:Emulate Feat
At the beginning of a character’s turn, he may spend 1 action point as a free action to gain the benefit of a feat he doesn’t have. He must meet the prerequisites of the feat. He gains the benefit until the beginning of his next turn.
What kind of efforts allow me to spontaneously gain a feat?
And, what kind of effort can allow me to produce a ladder? After all, you allowed that Call of Cthulu is a role playing game, and not a story game. Using CoC rules allows me to change the setting through what are effectively action points. I'm thinking that the effort that would allow me to produce a ladder would really, really hurt.
