Ok, to get back on topic....and catching up on this thread, in reverse...here are some thoughts:
1. Yes, I am primarily concerned with the mechanics of action declaration.
2. My discomfort with mechanics like Inspiring Leader, even though they don't seem to be directly related to action declaration, is that it blurs the line. It seems to me...especially reading some comments about "your character would/n't do that"...that it's a small step from dictating emotions to dictating actions.
3. BIFT and Alignment, as written, don't dictate actions. There are incentives to base RP off BIFT, but no demands. (Again, though, I don't think it's ok for another player or DM to say "your character wouldn't do that", citing BIFT/Alignment as the reason.)
4. Knowledge: what my character believes to be true, and what is actually true, are (or can be) two different things. I want to control what my character believes to be true. The DM gets to determine what is actually true.
5. This is all preference. I can totally see how a game could still work while dictating emotions, knowledge, and/or actions. Just not what I'm looking for in an RPG. I also don't like hoppy beer. So maybe it's just that I'm as unsophisticated in my gaming as I am in my beer drinking.