Dannyalcatraz said:By way of contrast, a fighter with +N BAB can disguise his fighting ability by essentially throwing away his bonuses by aiming to miss (a called shot to 2" away from the target's arm, a called shot to glance off of the shield, a called shot to graze the helmet, etc). Repeated misses could come from an unlucky warrior of ANY level- even THOR could miss like a newbie. However, a successful sense motive check would determine that the fighter is missing deliberately.
You are adding a rule for fighters that spell casters do not have. Why?
If a Ranger is tracking, he can ignore the tracks and continue on in the wrong direction. Would you require a Bluff / Sense Motive in that case as well? Even if the Ranger did not say a word, but just started following imaginary tracks?
The fact is that Bluff is fine when you are speaking. Bluff is fine for feinting (but this is not feinting). But you are just adding a brand new Bluff rule to emulate some portion of the real world that you assume exists by doing it here.
The DMG Similar Rule rule handles this fine without giving Bluff a meaning that is NOT written in Bluff at all. You are adding a rule which does not even follow something like the DMG Similar Rule rule (e.g. this is not similar to feinting). That's called a house rule.