3 votes for the flatfooted rule.

It being the only one so far that I thoroughly agree with.

Maybe I have the wrong mentality for this discussion, but... a rule with two possible interpretations, one of which leads to an obviously undesirable outcome - doesn't bother me at all. Similarly, something that can be interpreted different ways in different settings, I tend to see as a good thing.

Then again, I tend to DM rather than play, so I'm used to just making a judgement that seems to good to me and getting on with it. Getting saddled with a DM who didn't agree with me might make all the potential ambiguity more of an issue.